Torpedo-Boats, Torpedo-Boat Destroyers, and Destroyers in General

The Rock Doctor · March 20, 2018, 04:30:43 PM

The Swarm.

The Rock Doctor · March 20, 2018, 06:01:11 PM

Type 1891 Torpedo-Boats

Dokkum, Delfzil, Dusseldorf, Dresden, Dessau, Delmenhorst, Duchcov, Darlowo, Drawno, Dukla, Debica, Dynow, Danzig, Damachava, Dzivin, Dzyatlava, Dubrova, Dowsk, Dokshytsy, Dawhinava, Darbenai, Dotnuva, Dobele, Dusetos, Daugavpils: T51-75, laid down 1891-2

Eemshaven, Enschede, Essen, Erfurt, Erlangen, Einbeck, Eilenburg, Elmshorn, Eutin, Elektrenai, Engure, Eleja, Elva, Esbjerg, Eslov, Emmaboda, Ed, Enkoping, Ektrask, Evijarvi, Espoo, Ekenas, Eura, Eurajoki, Ennepetal: T76-100, laid down 1893-4

First ten scrapped, 1914
Second ten scrapped, 1915
Third ten scrapped, 1916
Fourth ten scrapped, 1916
Final ten units scrapped, 1918

Enter ship name, Enter country Enter ship type laid down 1891
Central citadel ship

Displacement:
   497 t light; 513 t standard; 572 t normal; 619 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (200.13 ft / 196.85 ft) x 22.97 ft x (9.84 / 10.42 ft)
   (61.00 m / 60.00 m) x 7.00 m x (3.00 / 3.18 m)

Armament:
1 - 3.94" / 100.0 mm 40.0 cal gun - 29.24lbs / 13.26kg shells, 150 per gun
     Quick firing gun in deck and hoist mount, 1891 Model
     1 x Single mount on centreline, forward deck centre
      1 raised mount
3 - 1.97" / 50.0 mm 40.0 cal guns - 3.66lbs / 1.66kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1891 Model
     1 x Single mount on sides amidships
      1 raised mount
     2 x Single mounts on centreline, aft evenly spread
      2 raised mounts
4 - 0.39" / 10.0 mm 40.0 cal guns - 0.03lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1891 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
Weight of broadside 40 lbs / 18 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.20" / 5 mm        -
   2nd:   0.79" / 20 mm   0.20" / 5 mm        -
   4th:   0.20" / 5 mm     -           -

- Conning towers: Forward 1.18" / 30 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 5,361 ihp / 4,000 Kw = 22.31 kts
   Range 2,000nm at 10.00 kts
   Bunker at max displacement = 106 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   58 - 76

Cost:
   £0.067 million / $0.266 million

Distribution of weights at normal displacement:
   Armament: 11 tons, 1.8 %
     - Guns: 11 tons, 1.8 %
   Armour: 10 tons, 1.7 %
     - Armament: 8 tons, 1.4 %
     - Conning Tower: 2 tons, 0.3 %
   Machinery: 325 tons, 56.8 %
   Hull, fittings & equipment: 133 tons, 23.3 %
   Fuel, ammunition & stores: 75 tons, 13.2 %
   Miscellaneous weights: 18 tons, 3.1 %
     - On freeboard deck: 18 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     110 lbs / 50 Kg = 3.6 x 3.9 " / 100 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.27
   Metacentric height 0.8 ft / 0.3 m
   Roll period: 10.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.29
   Seaboat quality (Average = 1.00): 1.04

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.450 / 0.460
   Length to Beam Ratio: 8.57 : 1
   'Natural speed' for length: 14.03 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 48
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 15.75 ft / 4.80 m, 15.75 ft / 4.80 m
     - Forward deck:   20.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Aft deck:   45.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Quarter deck:   15.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Average freeboard:      9.45 ft / 2.88 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 189.4 %
      - Above water (accommodation/working, high = better): 74.6 %
   Waterplane Area: 2,884 Square feet or 268 Square metres
   Displacement factor (Displacement / loading): 27 %
   Structure weight / hull surface area: 24 lbs/sq ft or 119 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.01
      - Overall: 0.57
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room

The Rock Doctor · March 20, 2018, 06:09:53 PM

Type 1895 Torpedo-boat

Fjerritslev, Frederikshavn, Fransta, Ferwer, Frankfurt, Furstenfeldbruck, Friedberg, Forchhem, Fulda, Forst, Furstenwale, Frombork, Fastiv, Fyadory, Fanipal, Faaborg, Farosund, Finspang, Forshaga, Fagersta, Falun, Furudal, Fallfors, Flensberg, Fallingbostel: T101-125, laid down 1895-6

Grindsted, Goteburg, Gnesta, Gavle, Groningen, Gramsbergen, Ganderkesee, Garbsen, Gutersloh, Gronau, Goslar, Gunzenhausen, Germering, Grafing, Gera, Glauchau, Grossraschen, Gorlitz, Gube, Gifhorn, Gnethin, Grevesmulhen, Griefswald, Grimmen, Gliwice: T126-150, laid down 1898-9

First ten scrapped 1919
Ten scrapped 1/1920
Ten scrapped 2/20
Ten scrapped 1/21
Final ten scrapped 2/21

Enter ship name, Enter country Enter ship type laid down 1895

Displacement:
   488 t light; 504 t standard; 572 t normal; 627 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (200.13 ft / 196.85 ft) x 22.97 ft x (9.84 / 10.50 ft)
   (61.00 m / 60.00 m) x 7.00 m x (3.00 / 3.20 m)

Armament:
1 - 3.94" / 100.0 mm 40.0 cal gun - 29.24lbs / 13.26kg shells, 150 per gun
     Quick firing gun in deck and hoist mount, 1895 Model
     1 x Single mount on centreline, forward deck centre
3 - 1.97" / 50.0 mm 40.0 cal guns - 3.66lbs / 1.66kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1895 Model
     1 x Single mount on sides amidships
     2 x Single mounts on centreline, aft evenly spread
4 - 0.39" / 10.0 mm 40.0 cal guns - 0.03lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1895 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
Weight of broadside 40 lbs / 18 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.20" / 5 mm        -
   2nd:   0.79" / 20 mm   0.20" / 5 mm        -
   4th:   0.20" / 5 mm     -           -

- Conning towers: Forward 1.18" / 30 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 6,032 ihp / 4,500 Kw = 22.93 kts
   Range 2,500nm at 10.00 kts
   Bunker at max displacement = 123 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   58 - 76

Cost:
   £0.066 million / $0.264 million

Distribution of weights at normal displacement:
   Armament: 11 tons, 1.8 %
     - Guns: 11 tons, 1.8 %
   Armour: 10 tons, 1.7 %
     - Armament: 8 tons, 1.4 %
     - Conning Tower: 2 tons, 0.3 %
   Machinery: 323 tons, 56.5 %
   Hull, fittings & equipment: 118 tons, 20.6 %
   Fuel, ammunition & stores: 84 tons, 14.7 %
   Miscellaneous weights: 26 tons, 4.5 %
     - On freeboard deck: 26 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     116 lbs / 53 Kg = 3.8 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.41
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 9.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.14
   Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.450 / 0.462
   Length to Beam Ratio: 8.57 : 1
   'Natural speed' for length: 14.03 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 15.75 ft / 4.80 m, 15.75 ft / 4.80 m
     - Forward deck:   20.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Aft deck:   45.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Quarter deck:   15.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Average freeboard:      9.45 ft / 2.88 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 188.6 %
      - Above water (accommodation/working, high = better): 74.6 %
   Waterplane Area: 2,884 Square feet or 268 Square metres
   Displacement factor (Displacement / loading): 27 %
   Structure weight / hull surface area: 22 lbs/sq ft or 106 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.96
      - Overall: 0.57
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room

The Rock Doctor · March 20, 2018, 06:23:04 PM

Type 1902 Torpedo-Boat

Helsingborg, Hogsby, Hallnas, Himanka, Helsinki, Hanka, Haarlem, Harlingen, Hilversum, Hellendoorn, Hamburg, Husum, Heide, Hildesheim, Heidelberg, Hauzenberg, Hof, Hoxter, Halberstadt, Hoyerswerda: T151-170, laid down 1902-4

-First ten units scrapped, 1925
-Remaining units scrapped, 1926

Enter ship name, Enter country Enter ship type laid down 1902

Displacement:
   507 t light; 524 t standard; 583 t normal; 631 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (213.25 ft / 209.97 ft) x 22.97 ft x (9.84 / 10.39 ft)
   (65.00 m / 64.00 m) x 7.00 m x (3.00 / 3.17 m)

Armament:
1 - 3.94" / 100.0 mm 45.0 cal gun - 30.77lbs / 13.96kg shells, 150 per gun
     Quick firing gun in deck and hoist mount, 1902 Model
     1 x Single mount on centreline, forward deck centre
      1 raised mount
3 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.74kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1902 Model
     1 x Single mount on sides amidships
      1 raised mount
     2 x Single mounts on centreline, aft evenly spread
      2 raised mounts
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.03lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1902 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
Weight of broadside 42 lbs / 19 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.20" / 5 mm        -
   2nd:   0.79" / 20 mm   0.20" / 5 mm        -
   4th:   0.20" / 5 mm     -           -

- Conning towers: Forward 1.18" / 30 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 6,970 ihp / 5,200 Kw = 23.99 kts
   Range 2,500nm at 10.00 kts
   Bunker at max displacement = 107 tons (90% coal)
     Caution: Delicate, lightweight machinery

Complement:
   59 - 77

Cost:
   £0.068 million / $0.273 million

Distribution of weights at normal displacement:
   Armament: 12 tons, 2.1 %
     - Guns: 12 tons, 2.1 %
   Armour: 10 tons, 1.7 %
     - Armament: 8 tons, 1.4 %
     - Conning Tower: 2 tons, 0.3 %
   Machinery: 330 tons, 56.6 %
   Hull, fittings & equipment: 135 tons, 23.1 %
   Fuel, ammunition & stores: 76 tons, 13.0 %
   Miscellaneous weights: 20 tons, 3.4 %
     - On freeboard deck: 20 tons

Fittings:
-2 t: 1908 FC (fitted 1913)
-6 t: 3x1 450mm torpedoes
-10 t: S/R Wireless
-2 t: Weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     112 lbs / 51 Kg = 3.7 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.23
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 10.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.32
   Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.430 / 0.440
   Length to Beam Ratio: 9.14 : 1
   'Natural speed' for length: 14.49 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 48
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   25.00 %, 15.75 ft / 4.80 m, 15.75 ft / 4.80 m
     - Forward deck:   20.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Aft deck:   40.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Quarter deck:   15.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Average freeboard:      9.84 ft / 3.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 189.6 %
      - Above water (accommodation/working, high = better): 77.0 %
   Waterplane Area: 3,028 Square feet or 281 Square metres
   Displacement factor (Displacement / loading): 27 %
   Structure weight / hull surface area: 23 lbs/sq ft or 112 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.11
      - Overall: 0.58
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room

The Rock Doctor · March 20, 2018, 06:30:14 PM

Type 1905 Torpedo-Boat

Recognizing that the class would have a few years of second-rate service left before they could be replaced, the Union undertook a modest refurbishment program of the class in 1924:

-Chop out the old 50mm M&H and 10mm machine guns; replace them with a single 50mm AA and four 15mm machine guns
-Switch to all-oil-fired machinery, which increases the range from 2500 to 3100 nm @ 10 knots.
-Increase miscellaneous weight to 39 t, all of it new, even the radio.
-Basic refurb cost.

Indal, Illertissen, Ilza, Ivankiv, Ichnya, Iwye, Ivyanyets, Ignalina, Iecava, iisalmi, Ikaalinen, Inga, Ijsselmuiden, Ijmuiden, Itzehoe, Ingolstadt, Ilmenau, Idstein, Izyaslav,Irshava: T171-190, laid down 1905-7, refurbished 1924, scrapped 1931

AS REFURBISHED

I-class refurb, laid down 1905, refurbished 1924

Displacement:
539 t light; 560 t standard; 614 t normal; 658 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(229.66 ft / 226.38 ft) x 22.97 ft x (9.84 / 10.31 ft)
(70.00 m / 69.00 m) x 7.00 m x (3.00 / 3.14 m)

Armament:
2 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 200 per gun
Quick firing guns in deck and hoist mounts, 1905 Model
2 x Single mounts on centreline, evenly spread
2 raised mounts
1 - 1.97" / 50.0 mm 45.0 cal gun - 3.85lbs / 1.74kg shells, 200 per gun
Anti-air gun in deck mount, 1905 Model
1 x Single mount on centreline, aft deck forward
1 raised mount
4 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
Machine guns in deck mounts, 1905 Model
4 x Single mounts on sides amidships
4 raised mounts
Weight of broadside 66 lbs / 30 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.20" / 5 mm -
2nd: 0.79" / 20 mm 0.12" / 3 mm -

Machinery:
Oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 6,970 ihp / 5,200 Kw = 24.13 kts
Range 3,100nm at 10.00 kts
Bunker at max displacement = 98 tons
Caution: Delicate, lightweight machinery

Complement:
61 - 80

Cost:
£0.072 million / $0.288 million

Distribution of weights at normal displacement:
Armament: 18 tons, 3.0 %
Armour: 4 tons, 0.7 %
- Armament: 4 tons, 0.7 %
Machinery: 335 tons, 54.5 %
Hull, fittings & equipment: 143 tons, 23.2 %
Fuel, ammunition & stores: 75 tons, 12.2 %
Miscellaneous weights: 39 tons, 6.4 %
- Hull below water: 5 tons
- On freeboard deck: 17 tons
- Above deck: 17 tons

Fittings:
-2 t: 1918 Fire control (AD)
-10 t: S/R wireless (AD)
-5 t: Nightfighting doodads (AD)
-12 t: 1x3 heavyweight 21" torpedo carriage (FD)
-5 t: ASW stuff (FD)
-5 t: Basic hydrophone package (BW)

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
118 lbs / 53 Kg = 3.9 x 3.9 " / 100 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 0.7 ft / 0.2 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.09

Hull form characteristics:
Hull has raised forecastle,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.420 / 0.429
Length to Beam Ratio: 9.86 : 1
'Natural speed' for length: 15.05 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 15.75 ft / 4.80 m, 17.72 ft / 5.40 m
- Forward deck: 20.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
- Aft deck: 45.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
- Quarter deck: 15.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
- Average freeboard: 9.69 ft / 2.95 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 186.8 %
- Above water (accommodation/working, high = better): 79.7 %
Waterplane Area: 3,241 Square feet or 301 Square metres
Displacement factor (Displacement / loading): 32 %
Structure weight / hull surface area: 23 lbs/sq ft or 114 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.70
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

Warning: Date too early for anti-air gun - 2nd battery oh no it isn't

AS BUILT

Enter ship name, Enter country Enter ship type laid down 1905

Displacement:
   534 t light; 555 t standard; 614 t normal; 661 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (229.66 ft / 226.38 ft) x 22.97 ft x (9.84 / 10.35 ft)
   (70.00 m / 69.00 m) x 7.00 m x (3.00 / 3.16 m)

Armament:
2 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1905 Model
     2 x Single mounts on centreline, evenly spread
      2 raised mounts
2 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.74kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1905 Model
     2 x Single mounts on sides amidships
      2 raised mounts
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.03lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1905 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
Weight of broadside 69 lbs / 31 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.20" / 5 mm        -
   2nd:   0.79" / 20 mm   0.20" / 5 mm        -
   4th:   0.20" / 5 mm     -           -

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 6,970 ihp / 5,200 Kw = 24.13 kts
   Range 2,500nm at 10.00 kts
   Bunker at max displacement = 106 tons (90% coal)
     Caution: Delicate, lightweight machinery

Complement:
   61 - 80

Cost:
   £0.073 million / $0.293 million

Distribution of weights at normal displacement:
   Armament: 20 tons, 3.2 %
     - Guns: 20 tons, 3.2 %
   Armour: 8 tons, 1.3 %
     - Armament: 8 tons, 1.3 %
   Machinery: 341 tons, 55.5 %
   Hull, fittings & equipment: 145 tons, 23.6 %
   Fuel, ammunition & stores: 80 tons, 13.0 %
   Miscellaneous weights: 20 tons, 3.3 %
     - On freeboard deck: 20 tons

Fittings:
-10 t: SR Wireless
-6 t: 3 x 18" torpedoes
-2 t: 1908 FC (refitted 1913)
-2 t: Weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     113 lbs / 51 Kg = 3.7 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 0.7 ft / 0.2 m
   Roll period: 11.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.54
   Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.420 / 0.430
   Length to Beam Ratio: 9.86 : 1
   'Natural speed' for length: 15.05 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 48
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 15.75 ft / 4.80 m, 17.72 ft / 5.40 m
     - Forward deck:   20.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Aft deck:   45.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Quarter deck:   15.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
     - Average freeboard:      9.69 ft / 2.95 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 189.9 %
      - Above water (accommodation/working, high = better): 79.7 %
   Waterplane Area: 3,241 Square feet or 301 Square metres
   Displacement factor (Displacement / loading): 29 %
   Structure weight / hull surface area: 24 lbs/sq ft or 116 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.61
      - Overall: 0.56
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room

The Rock Doctor · March 20, 2018, 06:34:03 PM

J-Class Torpedo-Boat

Jonkoping, Jordanow, Jaslo,Jaroslaw, Janow Lubelski, Jarocin, Jastroie, Juodope: T191-198, laid down 1908-9
T199-200, laid down H1/1910
T201-202, laid down H1/1911

As refitted, 1916:

J-class refit, laid down 1908

Displacement:
533 t light; 554 t standard; 614 t normal; 662 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(229.66 ft / 226.38 ft) x 22.97 ft x (9.84 / 10.36 ft)
(70.00 m / 69.00 m) x 7.00 m x (3.00 / 3.16 m)

Armament:
2 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 200 per gun
Quick firing guns in deck and hoist mounts, 1908 Model
2 x Single mounts on centreline, evenly spread
2 raised mounts
2 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.75kg shells, 200 per gun
Quick firing guns in deck and hoist mounts, 1908 Model
2 x Single mounts on sides amidships
2 raised mounts
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.03lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1908 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 69 lbs / 31 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.20" / 5 mm -
2nd: 0.79" / 20 mm 0.20" / 5 mm -
3rd: 0.20" / 5 mm - -

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 10,456 shp / 7,800 Kw = 26.56 kts
Range 3,300nm at 10.00 kts
Bunker at max displacement = 107 tons

Complement:
61 - 80

Cost:
£0.068 million / $0.271 million

Distribution of weights at normal displacement:
Armament: 20 tons, 3.2 %
- Guns: 20 tons, 3.2 %
Armour: 8 tons, 1.3 %
- Armament: 8 tons, 1.3 %
Machinery: 301 tons, 49.1 %
Hull, fittings & equipment: 170 tons, 27.7 %
Fuel, ammunition & stores: 81 tons, 13.1 %
Miscellaneous weights: 34 tons, 5.5 %
- Hull below water: 5 tons
- On freeboard deck: 26 tons
- Above deck: 3 tons

Fittings:
-5 t: Basic hydrophone, below water
-10 t: S/R wireless, on deck
-2 t: 1912 fire control, above deck
-8 t: 1x2 1913 torpedoes, no reloads
-8 t: ASW weapons (80 x 90kg DC)
-1 t: Weight reserve, above deck

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
147 lbs / 67 Kg = 4.8 x 3.9 " / 100 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 0.6 ft / 0.2 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.61
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has raised forecastle,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.420 / 0.430
Length to Beam Ratio: 9.86 : 1
'Natural speed' for length: 15.05 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 25.00 %, 16.40 ft / 5.00 m, 19.36 ft / 5.90 m
- Forward deck: 20.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Aft deck: 40.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Quarter deck: 15.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Average freeboard: 10.94 ft / 3.34 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 170.2 %
- Above water (accommodation/working, high = better): 86.3 %
Waterplane Area: 3,241 Square feet or 301 Square metres
Displacement factor (Displacement / loading): 53 %
Structure weight / hull surface area: 25 lbs/sq ft or 122 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.57
- Overall: 0.58
Cramped machinery, storage, compartmentation space
Cramped accommodation and workspace room

_____

As originally built, 1908

Enter ship name, Enter country Enter ship type laid down 1908

Displacement:
   532 t light; 553 t standard; 614 t normal; 663 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (229.66 ft / 226.38 ft) x 22.97 ft x (9.84 / 10.37 ft)
   (70.00 m / 69.00 m) x 7.00 m x (3.00 / 3.16 m)

Armament:
2 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1908 Model
     2 x Single mounts on centreline, evenly spread
      2 raised mounts
2 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.75kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1908 Model
     2 x Single mounts on sides amidships
      2 raised mounts
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.03lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1908 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
Weight of broadside 69 lbs / 31 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.20" / 5 mm        -
   2nd:   0.79" / 20 mm   0.20" / 5 mm        -
   4th:   0.20" / 5 mm     -           -

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 10,456 shp / 7,800 Kw = 26.56 kts
   Range 2,500nm at 10.00 kts
   Bunker at max displacement = 109 tons (90% coal)

Complement:
   61 - 80

Cost:
   £0.069 million / $0.275 million

Distribution of weights at normal displacement:
   Armament: 20 tons, 3.2 %
     - Guns: 20 tons, 3.2 %
   Armour: 8 tons, 1.3 %
     - Armament: 8 tons, 1.3 %
   Machinery: 310 tons, 50.4 %
   Hull, fittings & equipment: 175 tons, 28.5 %
   Fuel, ammunition & stores: 82 tons, 13.3 %
   Miscellaneous weights: 20 tons, 3.3 %
     - On freeboard deck: 20 tons

Fittings:
-10 t: SR Wireless
-2 t: 1905 FC
-6 t: 3 x 18" torpedoes, no reloads

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     146 lbs / 66 Kg = 4.8 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 0.7 ft / 0.2 m
   Roll period: 11.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.60
   Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.420 / 0.430
   Length to Beam Ratio: 9.86 : 1
   'Natural speed' for length: 15.05 kts
   Power going to wave formation at top speed: 67 %
   Trim (Max stability = 0, Max steadiness = 100): 49
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   25.00 %, 16.40 ft / 5.00 m, 19.36 ft / 5.90 m
     - Forward deck:   20.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Aft deck:   40.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Quarter deck:   15.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Average freeboard:      10.94 ft / 3.34 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 173.6 %
      - Above water (accommodation/working, high = better): 86.3 %
   Waterplane Area: 3,241 Square feet or 301 Square metres
   Displacement factor (Displacement / loading): 49 %
   Structure weight / hull surface area: 26 lbs/sq ft or 125 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.51
      - Longitudinal: 2.63
      - Overall: 0.60
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room

The Rock Doctor · November 06, 2020, 06:14:26 PM

K-Class Torpedo-Boats

Kolding, Kalmar, Kalajoki, Kiel (TB203-206) laid down 1911, refurbished 1927
Kassel, Kalundbog, Klitmoller, Knaben, Kungshamn, Kungaly, Karlsborg, Katrineholm, Kungsbacka, karlskrona, kristianstad, Kaunas, Koszalin, Kluki, Kolobrzeg, Kulmbach, laid down 1912, refurbished 1927-8
Kutna Hora, Klodzko, Karpacz, Klatovy Vary, Kromeriz, laid down 1913
Krakow, Kazincbarcika, Katowice, Kluczbork, Kedzierzyn-Kozie, laid down 1914

As Refurbished, 1927-1928

Displacement:
   945 t light; 983 t standard; 1,134 t normal; 1,255 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (299.02 ft / 295.60 ft) x 29.53 ft x (10.83 / 11.60 ft)
   (91.14 m / 90.10 m) x 9.00 m x (3.30 / 3.54 m)

Armament:
3 - 3.94" / 100.0 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
     Quick firing guns in deck mounts, 1911 Model
     3 x Single mounts on centreline, evenly spread
     Aft Main mounts separated by engine room
2 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.74kg shells, 200 per gun
     Anti-air guns in deck mounts, 1911 Model
     2 x Single mounts on sides amidships
8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
     Machine guns in deck mounts, 1911 Model
     4 x Twin mounts on sides amidships
      4 raised mounts
Weight of broadside 101 lbs / 46 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.59" / 15 mm        -
   2nd:   0.79" / 20 mm   0.59" / 15 mm        -
   3rd:   0.59" / 15 mm     -           -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 20,108 shp / 15,000 Kw = 29.31 kts
   Range 6,800nm at 10.00 kts
   Bunker at max displacement = 271 tons

Complement:
   97 - 127

Cost:
   £0.119 million / $0.476 million

Distribution of weights at normal displacement:
   Armament: 19 tons, 1.7 %
   Armour: 21 tons, 1.9 %
     - Armament: 21 tons, 1.9 %
   Machinery: 576 tons, 50.8 %
   Hull, fittings & equipment: 253 tons, 22.3 %
   Fuel, ammunition & stores: 189 tons, 16.7 %
   Miscellaneous weights: 76 tons, 6.7 %
     - Hull below water: 25 tons
     - On freeboard deck: 39 tons
     - Above deck: 12 tons

Fittings:
-10 t: Sonar (BW)
-15 t: Enhanced hydrophone package (BW)
-16 t: 2x2 530mm heavyweight torpedo carriages (FD)
-14 t: ASW munitions (FD) (2 x Y-DCT, 36 x 280 kg DC)
-2 t: 1918 fire control (AD)
-10 t: Nightfighting doodads (AD)
-9 t: Weight reserve (FD)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     302 lbs / 137 Kg = 9.9 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.31
   Metacentric height 1.3 ft / 0.4 m
   Roll period: 10.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.12
   Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.420 / 0.434
   Length to Beam Ratio: 10.01 : 1
   'Natural speed' for length: 17.19 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 19.36 ft / 5.90 m, 16.40 ft / 5.00 m
     - Forward deck:   20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
     - Aft deck:   45.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Quarter deck:   15.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Average freeboard:      11.92 ft / 3.63 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 171.8 %
      - Above water (accommodation/working, high = better): 117.0 %
   Waterplane Area: 5,442 Square feet or 506 Square metres
   Displacement factor (Displacement / loading): 64 %
   Structure weight / hull surface area: 26 lbs/sq ft or 126 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.39
      - Overall: 0.55
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform

As Built

Enter ship name, Enter country Enter ship type laid down 1911

Displacement:
945 t light; 982 t standard; 1,134 t normal; 1,256 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(299.02 ft / 295.60 ft) x 29.53 ft x (10.83 / 11.61 ft)
(91.14 m / 90.10 m) x 9.00 m x (3.30 / 3.54 m)

Armament:
3 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
Breech loading guns in deck mounts, 1911 Model
3 x Single mounts on centreline, evenly spread
2 - 1.97" / 50.0 mm 45.0 cal guns - 3.85lbs / 1.74kg shells, 200 per gun
Quick firing guns in deck mounts, 1911 Model
2 x Single mounts on sides amidships
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.03lbs / 0.01kg shells, 15,000 per gun
Machine guns in deck mounts, 1911 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 100 lbs / 45 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.20" / 5 mm -
2nd: 0.79" / 20 mm 0.20" / 5 mm -
3rd: 0.20" / 5 mm - -

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 20,108 shp / 15,000 Kw = 29.31 kts
Range 5,100nm at 10.00 kts
Bunker at max displacement = 274 tons (90% coal)

Complement:
97 - 127

Cost:
£0.122 million / $0.486 million

Distribution of weights at normal displacement:
Armament: 16 tons, 1.4 %
- Guns: 16 tons, 1.4 %
Armour: 10 tons, 0.9 %
- Armament: 10 tons, 0.9 %
Machinery: 597 tons, 52.6 %
Hull, fittings & equipment: 259 tons, 22.8 %
Fuel, ammunition & stores: 189 tons, 16.7 %
Miscellaneous weights: 63 tons, 5.6 %
- Hull above water: 1 tons
- On freeboard deck: 52 tons
- Above deck: 10 tons

Fittings:
-4 t: 1908 FC, redundant
-16 t: 2x2 1913 21" TT, no reloads
-15 t: Enhanced hydrophone package
-10 t: ASW munitions
-8 t: Weight reserve

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
293 lbs / 133 Kg = 9.6 x 3.9 " / 100 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.28
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.1 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.12
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.420 / 0.434
Length to Beam Ratio: 10.01 : 1
'Natural speed' for length: 17.19 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 19.36 ft / 5.90 m, 16.40 ft / 5.00 m
- Forward deck: 20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 45.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Quarter deck: 15.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Average freeboard: 11.92 ft / 3.63 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 175.1 %
- Above water (accommodation/working, high = better): 117.0 %
Waterplane Area: 5,442 Square feet or 506 Square metres
Displacement factor (Displacement / loading): 60 %
Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.43
- Overall: 0.56
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

The Rock Doctor · December 19, 2020, 06:59:54 PM

L-Class Torpedo-Boat

Incremental upgrades on the K-class boats, with an additional main gun and oil bunkerage.

Lubeck, Lublin, Lodz, Lviv, (TB233-6), laid down 1915
Lingen, Luneburg, Larsmo, Legionowo (TB237-240), laid down 1915
Leer, Lakken, Lolland, Leba (TB241-44), laid down 1916
Ljosland, Lysekil, Ljungsbro, Lyngby (TB245-248), laid down 1916

Enter ship name, Enter country Enter ship type laid down 1915

Displacement:
   1,000 t light; 1,046 t standard; 1,202 t normal; 1,327 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (313.79 ft / 310.20 ft) x 29.53 ft x (11.48 / 12.26 ft)
   (95.64 m / 94.55 m) x 9.00 m x (3.50 / 3.74 m)

Armament:
4 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 300 per gun
     Quick firing guns in deck mounts, 1915 Model
     4 x Single mounts on centreline, evenly spread
      2 raised mounts
1 - 1.97" / 50.0 mm 45.0 cal gun - 3.85lbs / 1.75kg shells, 200 per gun
     Anti-air gun in deck mount, 1915 Model
     1 x Single mount on centreline, aft deck forward
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.03lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1915 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
Weight of broadside 127 lbs / 58 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm   0.39" / 10 mm        -
   2nd:   0.39" / 10 mm   0.39" / 10 mm        -
   3rd:   0.20" / 5 mm     -           -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 23,459 shp / 17,500 Kw = 30.46 kts
   Range 8,000nm at 10.00 kts
   Bunker at max displacement = 281 tons

Complement:
   101 - 132

Cost:
   £0.187 million / $0.749 million

Distribution of weights at normal displacement:
   Armament: 23 tons, 1.9 %
     - Guns: 23 tons, 1.9 %
   Armour: 15 tons, 1.2 %
     - Armament: 15 tons, 1.2 %
   Machinery: 625 tons, 52.0 %
   Hull, fittings & equipment: 279 tons, 23.2 %
   Fuel, ammunition & stores: 202 tons, 16.8 %
   Miscellaneous weights: 58 tons, 4.9 %
     - Hull above water: 0 tons
     - On freeboard deck: 48 tons
     - Above deck: 10 tons
Fittings:
-5 t: Redundant 1908 FC
-18 t: 2x3 – 530mm torpedoes (no reloads)
-15 t: Enhanced hydrophone package
-10 t: ASW munitions (100 x 90 kg DC)
-10 t: Weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     299 lbs / 136 Kg = 9.8 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.23
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 11.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.19
   Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.400 / 0.414
   Length to Beam Ratio: 10.51 : 1
   'Natural speed' for length: 17.61 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   20.00 %, 20.34 ft / 6.20 m, 16.40 ft / 5.00 m
     - Forward deck:   20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
     - Aft deck:   45.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Quarter deck:   15.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
     - Average freeboard:      11.99 ft / 3.66 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 174.3 %
      - Above water (accommodation/working, high = better): 116.5 %
   Waterplane Area: 5,638 Square feet or 524 Square metres
   Displacement factor (Displacement / loading): 63 %
   Structure weight / hull surface area: 27 lbs/sq ft or 132 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.41
      - Overall: 0.55
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

The Rock Doctor · May 04, 2021, 03:45:17 PM

M-Class Torpedo Boats

The M class torpedo-boats are basically modest upgrades of the L class and from a distance look almost identical. Slightly more efficient machinery allows slight more machinery, there's a bit more ASW hardware, heavier torpedoes, that sort of thing. It's anticipated that a run of sixteen units will take place between 1917 and 1918. This would put the Union Navy at 62 torpedo-boats in the 1,000 t range, at which point they may scale up to something larger.

Middelfart, Malmo, Mellurd, Mora (TB-249 to -252), laid down 1917
Munster, Mindin, Minsk, Munchen (TB-253 to -256), laid down 1917
Malta, Meppel, Mannheim, Moravska (TB-259 to 262), laid down 1918
Mazirbe, Maardu, Mazowiecka, Marijampole (TB-264 to 267), laid down 1918

Enter ship name, Enter country Enter ship type laid down 1917

Displacement:
1,012 t light; 1,057 t standard; 1,202 t normal; 1,318 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(313.96 ft / 310.20 ft) x 29.53 ft x (11.48 / 12.20 ft)
(95.70 m / 94.55 m) x 9.00 m x (3.50 / 3.72 m)

Armament:
4 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 300 per gun
Quick firing guns in deck mounts, 1917 Model
4 x Single mounts on centreline, evenly spread
2 raised mounts
1 - 1.97" / 50.0 mm 45.0 cal gun - 3.85lbs / 1.74kg shells, 200 per gun
Anti-air gun in deck mount, 1917 Model
1 x Single mount on centreline, aft deck forward
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.03lbs / 0.01kg shells, 4,000 per gun
Machine guns in deck mounts, 1917 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 127 lbs / 58 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.20" / 5 mm - -

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 24,129 shp / 18,000 Kw = 30.67 kts
Range 8,000nm at 10.00 kts
Bunker at max displacement = 261 tons

Complement:
101 - 132

Cost:
£0.234 million / $0.935 million

Distribution of weights at normal displacement:
Armament: 23 tons, 1.9 %
- Guns: 23 tons, 1.9 %
Armour: 15 tons, 1.2 %
- Armament: 15 tons, 1.2 %
Machinery: 621 tons, 51.7 %
Hull, fittings & equipment: 281 tons, 23.4 %
Fuel, ammunition & stores: 190 tons, 15.8 %
Miscellaneous weights: 72 tons, 6.0 %
- Hull below water: 15 tons
- Hull above water: 0 tons
- On freeboard deck: 47 tons
- Above deck: 10 tons

Fittings
-15 t: Enhanced hydrophone package
-6 t: Redundant 1912 fire control
-24 t: 2x3 Model 1913 530mm torpedoes (no reloads)
-15 t: ASW munitions (150 x 90 kg DC)
-12 t: Weight reserve

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
298 lbs / 135 Kg = 9.8 x 3.9 " / 100 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 1.2 ft / 0.4 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.19
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.400 / 0.413
Length to Beam Ratio: 10.51 : 1
'Natural speed' for length: 17.61 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 21.33 ft / 6.50 m, 16.40 ft / 5.00 m
- Forward deck: 20.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 45.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Quarter deck: 15.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Average freeboard: 12.07 ft / 3.68 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.4 %
- Above water (accommodation/working, high = better): 116.5 %
Waterplane Area: 5,638 Square feet or 524 Square metres
Displacement factor (Displacement / loading): 63 %
Structure weight / hull surface area: 27 lbs/sq ft or 132 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.45
- Overall: 0.55
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

The Rock Doctor · June 20, 2021, 06:10:15 AM

N Class Torpedo-Boat

The Nurnberg class torpedo-boats are actually not really torpedo-boats, at least in the general sense of what they're supposed to be doing.

Rather than being part of a screen or a torpedo attack, they're actually intended to operate on the disengaged beam of the battleline as dedicated signal-repeaters and to otherwise be a "tender" to the flagship of a battlegroup. That can require the ship to move key personnel between capital ships and/or shore, and to function as a temporary flagship, if necessary, while this takes place.

This requires some additional capabilities that the current ~1,000 t torpedo-boats can't ship, such as flag facilities, a long-range wireless, a high sprint speed, long legs, and supplemental signaling capabilities. The larger N class has room for these, though its torpedo and ASW armaments are somewhat reduced compared to the L/M classes. As noted, those weapons are there if needed, not because they're primary functions.

It was suggested that electric drives might be handy for the whole "transport between ships" function, but the boffins simply couldn't make it work with the other design parameters provided.

Consideration was given towards a modification of the Kopparberg class cruiser-minelayers for this new type, but frugality won out; the navy had enough trouble convincing the government it needed special ships for admirals as it was. Securing additional Magdala class cruisers - which could easily do the job - was right out.

The exact size of the class is unclear at this time - a minimum of three units seems likely, but there could be up to five.

Nurnberg, TB-257, laid down 1917
Nokia, TB-258, laid down 1918
Nowy Sacz, TB-263, laid down 1918
Norrkoping, TB-268, laid down 1919

Nurnberg class TB, laid down 1917

Displacement:
1,499 t light; 1,552 t standard; 1,760 t normal; 1,926 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(374.96 ft / 362.86 ft) x 32.81 ft x (12.47 / 13.25 ft)
(114.29 m / 110.60 m) x 10.00 m x (3.80 / 4.04 m)

Armament:
4 - 3.94" / 100 mm 45.0 cal guns - 30.78lbs / 13.96kg shells, 250 per gun
Quick firing guns in deck and hoist mounts, 1917 Model
4 x Single mounts on centreline ends, evenly spread
2 raised mounts - superfiring
1 - 1.97" / 50.0 mm 45.0 cal gun - 3.86lbs / 1.75kg shells, 150 per gun
Anti-air gun in deck mount, 1917 Model
1 x Single mount on sides, aft deck centre
1 raised mount
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.02lbs / 0.01kg shells, 4,000 per gun
Machine guns in deck mounts, 1917 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 127 lbs / 58 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.79" / 20 mm -
2nd: 0.79" / 20 mm - -
3rd: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 30,161 shp / 22,500 Kw = 31.14 kts
Range 9,000nm at 10.00 kts
Bunker at max displacement = 375 tons

Complement:
135 - 176

Cost:
£0.341 million / $1.366 million

Distribution of weights at normal displacement:
Armament: 35 tons, 2.0 %
- Guns: 35 tons, 2.0 %
Armour: 27 tons, 1.5 %
- Armament: 27 tons, 1.5 %
Machinery: 880 tons, 50.0 %
Hull, fittings & equipment: 407 tons, 23.2 %
Fuel, ammunition & stores: 261 tons, 14.8 %
Miscellaneous weights: 150 tons, 8.5 %
- Hull below water: 15 tons
- On freeboard deck: 71 tons
- Above deck: 64 tons

Fittings:
-25 t: Extra signalling gear (larger masts, flag lockers, signal lamps) (AD)
-25 t: L/R wireless (AD)
-10 t: Additional S/R wireless (AD)
-4 t: 1912 fire control (AD)
-50 t: Flag facilities (FD)
-5 t: ASW Weaponry (FD) (50 x 90 kg DC)
-12 t: 1x3 Model 1913 530mm torpedoes (no reloads)
-4 t: Weight reserve (FD)
-15 t: Enhanced hydrophone package (BW)

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
443 lbs / 201 Kg = 14.5 x 3.9 " / 100 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 1.2 ft / 0.4 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.29
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.415 / 0.427
Length to Beam Ratio: 11.06 : 1
'Natural speed' for length: 19.05 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 20.67 ft / 6.30 m, 15.75 ft / 4.80 m
- Forward deck: 40.00 %, 15.75 ft / 4.80 m, 15.75 ft / 4.80 m
- Aft deck: 25.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
- Quarter deck: 15.00 %, 7.87 ft / 2.40 m, 7.87 ft / 2.40 m
- Average freeboard: 12.99 ft / 3.96 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 169.3 %
- Above water (accommodation/working, high = better): 132.7 %
Waterplane Area: 7,397 Square feet or 687 Square metres
Displacement factor (Displacement / loading): 70 %
Structure weight / hull surface area: 31 lbs/sq ft or 150 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.11
- Overall: 0.54
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room

The Rock Doctor · September 08, 2021, 06:20:59 PM

Ogre Class Torpedo-Boat

A larger torpedo-boat to lead torpedo squadrons in outlying territories, where the only cruiser on the scene may be a colonial cruiser limited to 22 knots.

The union's sticking to 100mm guns because they wouldn't be able to shove four plus the command facilities into the ship on 1,500 tons plus it makes for easier logistics if the leader and its flock are all using up the same ammunition.

It will make for an oddly-sized squadron if they ever operate together, but we'll worry about that later.

Ogre, TB-269, laid down 1919
Overkalix, TB-270, laid down 1919
Oulu, TB-272, laid down 1919
Oldenburg, TB-273, laid down 1919
Osnabruck, TB-274, laid down 1919

Ogre, Vilnius Union torpedo-boat, laid down 1919

Displacement:
1,422 t light; 1,476 t standard; 1,643 t normal; 1,776 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(369.89 ft / 360.89 ft) x 32.81 ft x (12.14 / 12.78 ft)
(112.74 m / 110.00 m) x 10.00 m x (3.70 / 3.90 m)

Armament:
4 - 3.94" / 100 mm 45.0 cal guns - 30.78lbs / 13.96kg shells, 300 per gun
Quick firing guns in deck mounts, 1919 Model
4 x Single mounts on centreline, evenly spread
2 raised mounts
1 - 1.97" / 50.0 mm 45.0 cal gun - 3.86lbs / 1.75kg shells, 200 per gun
Anti-air gun in deck mount, 1919 Model
1 x Single mount on centreline, forward deck aft
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.02lbs / 0.01kg shells, 4,000 per gun
Machine guns in deck mounts, 1919 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 127 lbs / 58 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 32,172 shp / 24,000 Kw = 32.00 kts
Range 8,000nm at 10.00 kts
Bunker at max displacement = 300 tons

Complement:
128 - 167

Cost:
£0.385 million / $1.540 million

Distribution of weights at normal displacement:
Armament: 23 tons, 1.4 %
- Guns: 23 tons, 1.4 %
Armour: 13 tons, 0.8 %
- Armament: 13 tons, 0.8 %
Machinery: 860 tons, 52.4 %
Hull, fittings & equipment: 377 tons, 22.9 %
Fuel, ammunition & stores: 221 tons, 13.4 %
Miscellaneous weights: 149 tons, 9.1 %
- Hull below water: 15 tons
- On freeboard deck: 56 tons
- Above deck: 78 tons

Fittings:
-50 t: Command facilities (AD)
-25 t: L/R wireless (AD)
-3 t: 1912 fire control (AD)
-32 t: 2x4 Type 1913 530mm torpedo carriages (FD)
-15 t : ASW munitions (FD) (150 x 90 kg DC)
-9 t: Weight reserve (FD)
-15 t : Enhanced hydrophone package (BW)

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
390 lbs / 177 Kg = 12.8 x 3.9 " / 100 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 1.2 ft / 0.4 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.15
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.400 / 0.411
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 19.00 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 21.33 ft / 6.50 m, 16.40 ft / 5.00 m
- Forward deck: 29.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Aft deck: 36.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Quarter deck: 15.00 %, 8.53 ft / 2.60 m, 8.53 ft / 2.60 m
- Average freeboard: 12.78 ft / 3.90 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.7 %
- Above water (accommodation/working, high = better): 130.6 %
Waterplane Area: 7,288 Square feet or 677 Square metres
Displacement factor (Displacement / loading): 66 %
Structure weight / hull surface area: 29 lbs/sq ft or 142 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.11
- Overall: 0.54
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

The Rock Doctor · September 08, 2021, 06:25:19 PM

Puck Class Torpedo-Boat

So the first thought was, "Let's add firepower to destroyers making torpedo attacks. Since the target is generally in front of the destroyer, we can get by with something with limited traverse. So what's the heaviest thing we can stick in a destroyer, and then do we need many shells for it given how low the rate of fire will be?"

I initially simmed this with a 280mm/40 cal gun, story-wise stripped from an old ship or spares for old ships. A turret with splinter protection kind of worked but a casemate weighed less. However, I don't have a casemate mounting for this size of gun. Go figure. And it worked, until I saw that the recoil factor was above 1.00. That still allows end-on fire, I think, but it did not bode well.

So I scaled down to a 250mm gun instead. I was like, okay, that somehow theoretically works but I don't have a casemate mounting for a 250mm gun any more than I do for a 280mm gun.

But I do have a casemate mounting for the 200mm/45 cal gun. And hang on, I can (according to SS) install two of those rather than one 250mm gun. So let's have them on the sides, forward. Give them more shells so they can fire away for about ten minutes.

The secondary armament - the normal armament in normal torpedo-boats - has a superfiring gun on the centreline forward, and two on the sides aft - notionally, these might interfere with each other shooting right aft, but should have good firing arcs forward at enemy screening craft. Full load of torpedoes because that's why they're really there.

I think maybe the casemates need to be a little further aft, under the bridge rather than in front of it, so that the ship's beam is a little wider at that point and the casemates have more space between the two gun. But this is the sketch I have for the moment.

I'm going to build one, Puck, as a "special" in 1919. They won't work at all as screening units, but a handful in the big offensive Swarm could be interesting.

Puck, TB-271, laid down 1919
Poznan, TB-275, laid down 1920
Potsdam, TB-276, laid down 1920
Prague, TB-277, laid down 1920

Enter ship name, Enter country Enter ship type laid down 1919

Displacement:
1,494 t light; 1,556 t standard; 1,748 t normal; 1,902 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(372.05 ft / 360.89 ft) x 32.81 ft x (11.48 / 12.19 ft)
(113.40 m / 110.00 m) x 10.00 m x (3.50 / 3.72 m)

Armament:
2 - 7.87" / 200 mm 45.0 cal guns - 246.18lbs / 111.66kg shells, 50 per gun
Breech loading guns in casemate mounts, 1919 Model
2 x Single mounts on sides, forward deck centre
3 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
Quick firing guns in deck mounts, 1919 Model
2 x Single mounts on sides, aft deck centre
2 raised mounts
1 x Single mount on centreline, forward deck centre
1 raised mount
1 - 1.97" / 50.0 mm 45.0 cal gun - 3.85lbs / 1.74kg shells, 150 per gun
Anti-air gun in deck mount, 1919 Model
1 x Single mount on centreline, forward deck aft
Weight of broadside 589 lbs / 267 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.12" / 3 mm -
2nd: 2.95" / 75 mm 0.39" / 10 mm -
3rd: 0.79" / 20 mm 0.12" / 3 mm -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 33,512 shp / 25,000 Kw = 31.78 kts
Range 9,000nm at 10.00 kts
Bunker at max displacement = 345 tons

Complement:
134 - 175

Cost:
£0.446 million / $1.786 million

Distribution of weights at normal displacement:
Armament: 89 tons, 5.1 %
- Guns: 89 tons, 5.1 %
Armour: 23 tons, 1.3 %
- Armament: 23 tons, 1.3 %
Machinery: 890 tons, 50.9 %
Hull, fittings & equipment: 426 tons, 24.4 %
Fuel, ammunition & stores: 254 tons, 14.5 %
Miscellaneous weights: 66 tons, 3.8 %
- Hull below water: 15 tons
- On freeboard deck: 41 tons
- Above deck: 10 tons

Fittings:
-9 t: 1912 fire control (AD)
-12 t: 1x3 530mm torpedo carriage, no reloads
-15 t: ASW munitions (150 x 90 kg DC)
-15 t: Enhanced hydrophone package

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
427 lbs / 193 Kg = 1.7 x 7.9 " / 200 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 1.2 ft / 0.4 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0.74
Seaboat quality (Average = 1.00): 1.09

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.450 / 0.461
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 19.00 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 74
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 21.65 ft / 6.60 m, 17.72 ft / 5.40 m
- Forward deck: 30.00 %, 17.72 ft / 5.40 m, 17.72 ft / 5.40 m
- Aft deck: 35.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
- Quarter deck: 15.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
- Average freeboard: 14.09 ft / 4.30 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 180.0 %
- Above water (accommodation/working, high = better): 144.7 %
Waterplane Area: 7,553 Square feet or 702 Square metres
Displacement factor (Displacement / loading): 64 %
Structure weight / hull surface area: 33 lbs/sq ft or 160 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.50
- Overall: 0.55
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

The Rock Doctor · January 28, 2022, 07:19:05 PM

Schweinfurt Class Torpedo-Boat

The Schweinfurt class torpedo-boats borrow heavily from other recent Union designs - the Quackenbush class sloops in terms of superstructure layout and the Puck class torpedo-boats for the hull.

The Union wasn't satisfied that it could fit four 130mm guns into this unit, however, so has indeed fitted it with a trio of new 2-gun 100mm/45 QF mountings. There's some concern that this means the class is under-armed compared to foreign contemporaries, but not horribly so.

On the other hand, they have a high top speed, long legs, and are well-suited to anti-submarine operations, so they'll likely be used to screen capital ships.

Schweinfurt, TB-278, laid down 1921
Stockholm, TB-279, laid down 1921
Stuttgart, TB-280, laid down 1921
Smolensk, TB-281, laid down 1921
Siebethsberg, TB-282, laid down 1921
Salzburg, TB-283, laid down 1921
Sigismundgrod, TB-284, laid down 1921
Swiety Piotr, TB-285, laid down 1921

Enter ship name, Enter country Enter ship type laid down 1921

Displacement:
1,499 t light; 1,562 t standard; 1,798 t normal; 1,987 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(372.05 ft / 360.89 ft) x 32.81 ft x (11.81 / 12.69 ft)
(113.40 m / 110.00 m) x 10.00 m x (3.60 / 3.87 m)

Armament:
6 - 3.94" / 100 mm 45.0 cal guns - 30.77lbs / 13.96kg shells, 250 per gun
Quick firing guns in deck mounts, 1921 Model
3 x 2-gun mounts on centreline ends, majority forward
1 raised mount - superfiring
1 - 1.97" / 50.0 mm 45.0 cal gun - 3.85lbs / 1.74kg shells, 250 per gun
Anti-air gun in deck mount, 1921 Model
1 x Single mount on centreline, aft deck centre
1 raised mount
4 - 0.39" / 10.0 mm 45.0 cal guns - 0.02lbs / 0.01kg shells, 4,000 per gun
Machine guns in deck mounts, 1921 Model
4 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 189 lbs / 86 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.79" / 20 mm -
2nd: 0.79" / 20 mm 0.39" / 10 mm -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 34,853 shp / 26,000 Kw = 31.95 kts
Range 11,500nm at 10.00 kts
Bunker at max displacement = 426 tons

Complement:
137 - 179

Cost:
£0.494 million / $1.976 million

Distribution of weights at normal displacement:
Armament: 34 tons, 1.9 %
- Guns: 34 tons, 1.9 %
Armour: 21 tons, 1.2 %
- Armament: 21 tons, 1.2 %
Machinery: 945 tons, 52.6 %
Hull, fittings & equipment: 398 tons, 22.1 %
Fuel, ammunition & stores: 299 tons, 16.6 %
Miscellaneous weights: 100 tons, 5.6 %
- Hull below water: 15 tons
- On freeboard deck: 55 tons
- Above deck: 30 tons

Fittings:
-4t: 1918 Fire Control (AD)
-25t: L/R wireless (AD)
-24t: 2x3 530mm torpedo carriages (FD)
-10t: Night-fighting doodads (FD)
-15t: ASW munitions (FD) (4 x T-DCT, 55 x 195 kg DC)
-15t: Enhanced hydrophones (BW)
-7t: Weight reserve (mostly FD)

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
439 lbs / 199 Kg = 14.4 x 3.9 " / 100 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 1.4 ft / 0.4 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.19
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.450 / 0.463
Length to Beam Ratio: 11.00 : 1
'Natural speed' for length: 19.00 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 69
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 21.65 ft / 6.60 m, 17.72 ft / 5.40 m
- Forward deck: 22.00 %, 17.72 ft / 5.40 m, 17.72 ft / 5.40 m
- Aft deck: 43.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
- Quarter deck: 15.00 %, 9.84 ft / 3.00 m, 9.84 ft / 3.00 m
- Average freeboard: 13.46 ft / 4.10 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 176.6 %
- Above water (accommodation/working, high = better): 131.3 %
Waterplane Area: 7,553 Square feet or 702 Square metres
Displacement factor (Displacement / loading): 69 %
Structure weight / hull surface area: 29 lbs/sq ft or 144 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.22
- Overall: 0.54
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

The Rock Doctor · August 02, 2022, 07:06:00 PM

Turku Class Torpedo-Boat

It's not spectacular. It does the main things the Union wants, which is to shoot four 130mm guns, have a long-range wireless, and keep up with fast capital ships for a while.

Appearance-wise it's a bit of a mash-up between the preceding S-class and the Q-class sloops.

Turku, TB-286, laid down 1923
Tallinn, TB-287, laid down 1923
Toruu, TB-288, laid down 1923
Tczew, TB-289 laid down 1923

Enter ship name, Enter country Enter ship type laid down 1923

Displacement:
1,883 t light; 1,971 t standard; 2,250 t normal; 2,473 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(388.70 ft / 377.30 ft) x 36.09 ft x (14.11 / 15.03 ft)
(118.48 m / 115.00 m) x 11.00 m x (4.30 / 4.58 m)

Armament:
4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
Quick firing guns in deck and hoist mounts, 1923 Model
4 x Single mounts on centreline ends, evenly spread
2 raised mounts - superfiring
1 - 3.94" / 100 mm 45.0 cal gun - 30.77lbs / 13.96kg shells, 250 per gun
Anti-air gun in deck mount, 1923 Model
1 x Single mount on sides, forward deck aft
1 raised mount
4 - 0.59" / 15.0 mm 45.0 cal guns - 0.10lbs / 0.05kg shells, 4,000 per gun
Machine guns in deck mounts, 1923 Model
4 x Single mounts on sides, evenly spread
4 double raised mounts
Weight of broadside 302 lbs / 137 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
2nd: 0.79" / 20 mm 0.12" / 3 mm -

- Conning towers: Forward 0.98" / 25 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,214 shp / 30,000 Kw = 32.25 kts
Range 12,000nm at 10.00 kts (13,200 factoring in the geared drive bonus)
Bunker at max displacement = 502 tons

Complement:
163 - 212

Cost:
£0.731 million / $2.924 million

Distribution of weights at normal displacement:
Armament: 79 tons, 3.5 %
- Guns: 79 tons, 3.5 %
Armour: 32 tons, 1.4 %
- Armament: 28 tons, 1.2 %
- Conning Tower: 4 tons, 0.2 %
Machinery: 1,129 tons, 50.2 %
Hull, fittings & equipment: 534 tons, 23.7 %
Fuel, ammunition & stores: 367 tons, 16.3 %
Miscellaneous weights: 110 tons, 4.9 %
- Hull below water: 15 tons
- On freeboard deck: 50 tons
- Above deck: 45 tons

Fittings:
-8 t: 1918 Fire control (AD)
-25 t: L/R wireless (AD)
-10 t: Nightfighting doodads (AD)
-24 t: 2x3 21" TT (FD)
-15 t: ASW munitions (FD) (4 x T-DCT, 55 x 195 kg DC)
-13 t: Weight reserve (mostly FD)
-15 t: Enhanced hydrophone package (BW)

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
538 lbs / 244 Kg = 8.0 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 1.5 ft / 0.4 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.410 / 0.423
Length to Beam Ratio: 10.45 : 1
'Natural speed' for length: 19.42 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 22.31 ft / 6.80 m, 18.37 ft / 5.60 m
- Forward deck: 26.00 %, 18.37 ft / 5.60 m, 18.37 ft / 5.60 m
- Aft deck: 39.00 %, 10.50 ft / 3.20 m, 10.50 ft / 3.20 m
- Quarter deck: 15.00 %, 10.50 ft / 3.20 m, 10.50 ft / 3.20 m
- Average freeboard: 14.44 ft / 4.40 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 174.8 %
- Above water (accommodation/working, high = better): 134.5 %
Waterplane Area: 8,432 Square feet or 783 Square metres
Displacement factor (Displacement / loading): 73 %
Structure weight / hull surface area: 36 lbs/sq ft or 176 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.34
- Overall: 0.55
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room

The Rock Doctor · January 29, 2023, 06:05:30 PM

Uusikaupunki Class Torpedo-Boat

The U-class torpedo-boat is basically a T-class with slightly newer and lighter machinery (producing the same output) and a few extra goodies paid for with the weight savings:

-two extra torpedoes
-more heavy machine guns, in twin mounts
-sonar.

They're essentially identical to the preceding T-class so I'm not sketching this one. They'll start production in 2/24.

Uusikaupunki, TB-290, laid down 1924
Uppsula, TB-291, laid down 1924
Ulm, TB-292, laid down 1924
Ushacha, TB-293, laid down 1924
Uzyn, TB-294, laid down 1925
Unterschleisheim, TB-295, laid down 1925
Utagarvi, TB-296, laid down 1925
Ustka, TB-297, laid down 1925
Uithuizen, TB-298, laid down 1926
Urechcha, TB-299, laid down 1926
Ulrum, TB-300, laid down 1926
Urthuizermeeden, TB-301, laid down 1926
Ulzburg, TB-302, laid down 1926
Uniejow, TB-303, laid down 1926
Uyo, TB-304, laid down 1926
Uruguaiana, TB-305, laid down 1926

Corrected U class torpedoboat, laid down 1924

Displacement:
1,885 t light; 1,974 t standard; 2,250 t normal; 2,471 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(388.70 ft / 377.30 ft) x 36.09 ft x (14.11 / 15.02 ft)
(118.48 m / 115.00 m) x 11.00 m x (4.30 / 4.58 m)

Armament:
4 - 5.12" / 130 mm 45.0 cal guns - 67.61lbs / 30.67kg shells, 250 per gun
Quick firing guns in deck and hoist mounts, 1924 Model
4 x Single mounts on centreline ends, evenly spread
2 raised mounts - superfiring
1 - 3.94" / 100.0 mm 45.0 cal gun - 30.77lbs / 13.96kg shells, 250 per gun
Anti-air gun in deck mount, 1924 Model
1 x Single mount on centreline, forward deck aft
1 raised mount
8 - 0.59" / 15.0 mm 90.0 cal guns - 0.12lbs / 0.05kg shells, 4,000 per gun
Machine guns in deck mounts, 1924 Model
4 x Twin mounts on sides, evenly spread
4 raised mounts
Weight of broadside 302 lbs / 137 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm 1.18" / 30 mm
2nd: 0.79" / 20 mm 0.12" / 3 mm -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,885 shp / 30,500 Kw = 32.38 kts
Range 12,000nm at 10.00 kts
Bunker at max displacement = 497 tons

Complement:
163 - 212

Cost:
£0.778 million / $3.112 million

Distribution of weights at normal displacement:
Armament: 79 tons, 3.5 %
Armour: 25 tons, 1.1 %
- Armament: 25 tons, 1.1 %
Machinery: 1,129 tons, 50.2 %
Hull, fittings & equipment: 533 tons, 23.7 %
Fuel, ammunition & stores: 365 tons, 16.2 %
Miscellaneous weights: 119 tons, 5.3 %
- Hull below water: 25 tons
- On freeboard deck: 49 tons
- Above deck: 45 tons

Fittings:
-8 t: 1918 fire control (AD)
-25 t: L/R wireless (AD)
-10 t: Nightfighting doodads (AD)
-24 t: 2x3 21" TT (FD)
-15 t: ASW munitions (FD) (2 x Y-DCT, 39 x 280 kg DC)
-12 t: Weight reserve (mostly FD)
-10 t: Sonar
-15 t: Enhanced hydrophones

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
537 lbs / 244 Kg = 8.0 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 1.5 ft / 0.5 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.410 / 0.423
Length to Beam Ratio: 10.45 : 1
'Natural speed' for length: 19.42 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 22.31 ft / 6.80 m, 18.37 ft / 5.60 m
- Forward deck: 26.00 %, 18.37 ft / 5.60 m, 18.37 ft / 5.60 m
- Aft deck: 39.00 %, 10.50 ft / 3.20 m, 10.50 ft / 3.20 m
- Quarter deck: 15.00 %, 10.50 ft / 3.20 m, 10.50 ft / 3.20 m
- Average freeboard: 14.44 ft / 4.40 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 175.5 %
- Above water (accommodation/working, high = better): 134.5 %
Waterplane Area: 8,432 Square feet or 783 Square metres
Displacement factor (Displacement / loading): 73 %
Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.34
- Overall: 0.55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent