NUS Small vessels for 1912

[Sachmle]

La Marina will be laying down two first-evers in 1912. One is the first ever Minesweeper, the M-1912 class. The other is the first 1000t DD, the D-200 class.

M-200 Class, Naciones Unidas Minesweeper laid down 1912 (Engine 1909)

Displacement:
   480 t light; 493 t standard; 570 t normal; 631 t full load

Dimensions: Length overall / water x beam x draught
   205.58 ft / 200.00 ft x 28.00 ft x 8.00 ft (normal load)
   62.66 m / 60.96 m x 8.53 m  x 2.44 m

Armament:
      1 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1912 Model
     Quick firing gun in deck mount
     on centreline forward
      6 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1912 Model
     Machine guns in deck mounts
     on side, evenly spread, 2 raised mounts
   Weight of broadside 14 lbs / 6 kg
   Shells per gun, main battery: 300

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm   0.25" / 6 mm            -
   2nd:   0.25" / 6 mm         -               -

Machinery:
   Oil fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 2,242 ihp / 1,672 Kw = 18.00 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 138 tons

Complement:
   57 - 75

Cost:
   £0.040 million / $0.161 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0.3 %
   Armour: 1 tons, 0.2 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1 tons, 0.2 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 157 tons, 27.5 %
   Hull, fittings & equipment: 230 tons, 40.3 %
   Fuel, ammunition & stores: 90 tons, 15.9 %
   Miscellaneous weights: 90 tons, 15.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     840 lbs / 381 Kg = 62.2 x 3.0 " / 76 mm shells or 0.5 torpedoes
   Stability (Unstable if below 1.00): 1.25
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has rise forward of midbreak, low quarterdeck
   Block coefficient: 0.445
   Length to Beam Ratio: 7.14 : 1
   'Natural speed' for length: 14.14 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 15.96 degrees
   Stern overhang: 1.00 ft / 0.30 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16.00 ft / 4.88 m
      - Forecastle (15 %):   16.00 ft / 4.88 m
      - Mid (50 %):      16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
      - Quarterdeck (15 %):   6.00 ft / 1.83 m (8.00 ft / 2.44 m before break)
      - Stern:      4.00 ft / 1.22 m
      - Average freeboard:   11.55 ft / 3.52 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 109.2 %
      - Above water (accommodation/working, high = better): 142.7 %
   Waterplane Area: 3,559 Square feet or 331 Square metres
   Displacement factor (Displacement / loading): 136 %
   Structure weight / hull surface area: 36 lbs/sq ft or 174 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 4.24
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

10t W/T
60t Mines
20t Sweeping gear


D-200 Class, Naciones Unidas Destroyer laid down 1912 (Engine 1909)

Displacement:
   1,000 t light; 1,040 t standard; 1,231 t normal; 1,384 t full load

Dimensions: Length overall / water x beam x draught
   317.00 ft / 314.00 ft x 27.00 ft x 9.00 ft (normal load)
   96.62 m / 95.71 m x 8.23 m  x 2.74 m

Armament:
      2 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1912 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      2 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 0.50" / 12.7 mm guns in single mounts, 0.05lbs / 0.02kg shells, 1912 Model
     Machine guns in deck mounts
     on centreline, all aft, all raised mounts - superfiring
   Weight of broadside 120 lbs / 55 kg
   Shells per gun, main battery: 200
   8 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -               -
   2nd:   1.00" / 25 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 21,559 shp / 16,083 Kw = 29.25 kts
   Range 4,920nm at 12.00 kts
   Bunker at max displacement = 344 tons

Complement:
   103 - 135

Cost:
   £0.139 million / $0.555 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 1.3 %
   Armour: 9 tons, 0.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 9 tons, 0.7 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 644 tons, 52.3 %
   Hull, fittings & equipment: 281 tons, 22.9 %
   Fuel, ammunition & stores: 231 tons, 18.7 %
   Miscellaneous weights: 50 tons, 4.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     307 lbs / 139 Kg = 9.6 x 4.0 " / 102 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.37
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 10.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.18
   Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
   Hull has raised forecastle, rise forward of midbreak
   Block coefficient: 0.565
   Length to Beam Ratio: 11.63 : 1
   'Natural speed' for length: 17.72 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 65
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 3.00 ft / 0.91 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.00 ft / 5.49 m
      - Forecastle (20 %):   18.00 ft / 5.49 m (16.00 ft / 4.88 m aft of break)
      - Mid (50 %):      16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
      - Quarterdeck (15 %):   8.00 ft / 2.44 m
      - Stern:      8.00 ft / 2.44 m
      - Average freeboard:   12.40 ft / 3.78 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 183.7 %
      - Above water (accommodation/working, high = better): 67.7 %
   Waterplane Area: 5,999 Square feet or 557 Square metres
   Displacement factor (Displacement / loading): 57 %
   Structure weight / hull surface area: 24 lbs/sq ft or 117 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 cramped
   Ship has slow, easy roll, a good, steady gun platform

[Borys]

The minesweeper is too fast :)

The destroyer - how many ways are there of saying "not enough deck space" :)

Unless ...
gun - bridge - stack - two difficult to use wing guns - stack - a pair of TT on each side - mainmast - a pair of TT on each side - gun

Borys

[Sachmle]

Too fast? What's a good speed for a minesweeper?  You pretty much nailed the layout on the DD though.  ;)

[Sachmle]

How's this for the DD? Same basic layout and hull form of the US O'Brien Class ships seen here: http://www.warshipsww2.eu/lode.php?language=E&period=&idtrida=2453

D-200 Class, Naciones Unidas Destroyer laid down 1912 (Engine 1909)

Displacement:
   1,000 t light; 1,040 t standard; 1,218 t normal; 1,360 t full load

Dimensions: Length overall / water x beam x draught
   319.00 ft / 316.00 ft x 30.00 ft x 10.00 ft (normal load)
   97.23 m / 96.32 m x 9.14 m  x 3.05 m

Armament:
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1912 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1912 Model
     Machine guns in deck mounts
     on centreline, all aft, all raised mounts - superfiring
   Weight of broadside 128 lbs / 58 kg
   Shells per gun, main battery: 200
   8 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -               -
   2nd:   1.00" / 25 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 20,554 shp / 15,333 Kw = 29.33 kts
   Range 4,650nm at 12.00 kts
   Bunker at max displacement = 320 tons

Complement:
   103 - 134

Cost:
   £0.137 million / $0.546 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 1.3 %
   Armour: 9 tons, 0.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 9 tons, 0.7 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 629 tons, 51.6 %
   Hull, fittings & equipment: 296 tons, 24.3 %
   Fuel, ammunition & stores: 218 tons, 17.9 %
   Miscellaneous weights: 50 tons, 4.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     325 lbs / 147 Kg = 10.2 x 4.0 " / 102 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.43
   Metacentric height 1.5 ft / 0.5 m
   Roll period: 10.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.12

Hull form characteristics:
   Hull has raised forecastle, rise forward of midbreak
   Block coefficient: 0.450
   Length to Beam Ratio: 10.53 : 1
   'Natural speed' for length: 17.78 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 63
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 3.00 ft / 0.91 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.00 ft / 5.49 m
      - Forecastle (20 %):   18.00 ft / 5.49 m (16.00 ft / 4.88 m aft of break)
      - Mid (50 %):      16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
      - Quarterdeck (15 %):   8.00 ft / 2.44 m
      - Stern:      8.00 ft / 2.44 m
      - Average freeboard:   12.40 ft / 3.78 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181.6 %
      - Above water (accommodation/working, high = better): 74.9 %
   Waterplane Area: 6,045 Square feet or 562 Square metres
   Displacement factor (Displacement / loading): 59 %
   Structure weight / hull surface area: 26 lbs/sq ft or 128 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.33
      - Overall: 0.55
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform

[Sachmle]

15knts good for the MS?

M-200 Class, Naciones Unidas Minesweeper laid down 1912 (Engine 1909)

Displacement:
   480 t light; 499 t standard; 676 t normal; 817 t full load

Dimensions: Length overall / water x beam x draught
   207.00 ft / 200.00 ft x 30.00 ft x 8.00 ft (normal load)
   63.09 m / 60.96 m x 9.14 m  x 2.44 m

Armament:
      1 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1906 Model
     Quick firing gun in deck mount
     on centreline forward
      6 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1906 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 33 lbs / 15 kg
   Shells per gun, main battery: 300

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm   1.00" / 25 mm            -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 1,254 ihp / 935 Kw = 15.00 kts
   Range 7,500nm at 10.00 kts
   Bunker at max displacement = 318 tons (100% coal)

Complement:
   66 - 86

Cost:
   £0.034 million / $0.136 million

Distribution of weights at normal displacement:
   Armament: 4 tons, 0.6 %
   Armour: 3 tons, 0.5 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 3 tons, 0.5 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 96 tons, 14.3 %
   Hull, fittings & equipment: 256 tons, 37.9 %
   Fuel, ammunition & stores: 196 tons, 29.0 %
   Miscellaneous weights: 120 tons, 17.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,565 lbs / 710 Kg = 48.9 x 4.0 " / 102 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 1.3 ft / 0.4 m
   Roll period: 11.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.05
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has raised forecastle, rise forward of midbreak
   Block coefficient: 0.493
   Length to Beam Ratio: 6.67 : 1
   'Natural speed' for length: 14.14 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 14.04 degrees
   Stern overhang: 2.00 ft / 0.61 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      20.00 ft / 6.10 m
      - Forecastle (20 %):   18.00 ft / 5.49 m (16.00 ft / 4.88 m aft of break)
      - Mid (50 %):      16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
      - Quarterdeck (15 %):   8.00 ft / 2.44 m
      - Stern:      8.00 ft / 2.44 m
      - Average freeboard:   12.56 ft / 3.83 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 71.9 %
      - Above water (accommodation/working, high = better): 134.0 %
   Waterplane Area: 3,972 Square feet or 369 Square metres
   Displacement factor (Displacement / loading): 193 %
   Structure weight / hull surface area: 36 lbs/sq ft or 175 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.85
      - Longitudinal: 4.52
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

25t W/T
75t Mines
20t Sweeping gear

[Borys]

Ahoj!
I'd say that 15-16 knots is maximum. But there are supporters of lower speeds out there :), IIRC.

I was hounded to bring down the speed of my miesweepr design, down to 17 knots. But I can defend that speed by the need to "go places", i.e. go selling Peace and Prosperity in the Pacific, for example :)

As to guessing the layout of the destroyer - LOL!
Seems I'm actually learning something :)

Borys

[Korpen]

Ahoj!
I'd say that 15-16 knots is maximum. But there are supporters of lower speeds out there :), IIRC.

Hu? I see no reason why a minesweeper cannot or should not have a decent turn of speed.
It is especially usefull when on escort or patrol missions. I take for granted that the large (over 100 ton) dedicated will do lots of auxiliary duties apart from sweeping mines.

I was hounded to bring down the speed of my miesweepr design, down to 17 knots.

I do not seem to recall that, when was that?

[Borys]

Ahoj!
Hounded is a bit too strong word, which I used in jest :)
I will dig up thread later.
Borys

[Sachmle]

Hu? I see no reason why a minesweeper cannot or should not have a decent turn of speed.
It is especially usefull when on escort or patrol missions. I take for granted that the large (over 100 ton) dedicated will do lots of auxiliary duties apart from sweeping mines.

The Misc weight is 25t W/T, 75t Mines (Yes, I actually put mines on something), and 20t sweeping gear. So the "auxiliary" duties you speak of would actually be minelaying.

[Carthaginian]

Hu? I see no reason why a minesweeper cannot or should not have a decent turn of speed.
It is especially usefull when on escort or patrol missions. I take for granted that the large (over 100 ton) dedicated will do lots of auxiliary duties apart from sweeping mines.

The Misc weight is 25t W/T, 75t Mines (Yes, I actually put mines on something), and 20t sweeping gear. So the "auxiliary" duties you speak of would actually be minelaying.

Or coastal patrol duties, for which these little ships are exceptionally well suited.

[Sachmle]

Ok did a rework on the D-200's so here's the new SS report and *gasp* a picture.

Image based on parts by Wes Wilson

D-200 Class, Naciones Unidas Destroyer laid down 1912 (Engine 1909)

Displacement:
   1,000 t light; 1,038 t standard; 1,240 t normal; 1,402 t full load

Dimensions: Length overall / water x beam x draught
   319.00 ft / 316.00 ft x 30.00 ft x 10.00 ft (normal load)
   97.23 m / 96.32 m x 9.14 m  x 3.05 m

Armament:
      4 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1906 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread, 2 raised mounts
     Aft Main mounts separated by engine room
   Weight of broadside 120 lbs / 54 kg
   Shells per gun, main battery: 200
   6 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 20,586 shp / 15,357 Kw = 29.23 kts
   Range 5,242nm at 12.00 kts
   Bunker at max displacement = 363 tons

Complement:
   103 - 135

Cost:
   £0.138 million / $0.553 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 1.3 %
   Armour: 9 tons, 0.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 9 tons, 0.7 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 642 tons, 51.7 %
   Hull, fittings & equipment: 294 tons, 23.7 %
   Fuel, ammunition & stores: 240 tons, 19.4 %
   Miscellaneous weights: 40 tons, 3.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     328 lbs / 149 Kg = 10.2 x 4.0 " / 102 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.49
   Metacentric height 1.6 ft / 0.5 m
   Roll period: 9.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.12

Hull form characteristics:
   Hull has raised forecastle, rise forward of midbreak
   Block coefficient: 0.458
   Length to Beam Ratio: 10.53 : 1
   'Natural speed' for length: 17.78 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 63
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 3.00 ft / 0.91 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.00 ft / 5.49 m
      - Forecastle (20 %):   18.00 ft / 5.49 m (16.00 ft / 4.88 m aft of break)
      - Mid (35 %):      16.00 ft / 4.88 m (10.00 ft / 3.05 m aft of break)
      - Quarterdeck (15 %):   10.00 ft / 3.05 m
      - Stern:      10.00 ft / 3.05 m
      - Average freeboard:   12.50 ft / 3.81 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 180.6 %
      - Above water (accommodation/working, high = better): 87.1 %
   Waterplane Area: 6,086 Square feet or 565 Square metres
   Displacement factor (Displacement / loading): 61 %
   Structure weight / hull surface area: 26 lbs/sq ft or 125 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.27
      - Overall: 0.54
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform

[The Rock Doctor]

The pic looks good.

[Sachmle]

Muchos Gracias, Senor.

[Sachmle]

I've let myself fall victim to the "It's too modern looking" crowd, and in this case I actually agree. So...here's the final version. Same equipment and hull, just moved around a little.


Image based on parts by Wes Wilson, modified by me.

D-200 Class, Naciones Unidas Destroyer laid down 1912 (Engine 1909)

Displacement:
   1,000 t light; 1,041 t standard; 1,246 t normal; 1,410 t full load

Dimensions: Length overall / water x beam x draught
   319.00 ft / 316.00 ft x 30.00 ft x 10.00 ft (normal load)
   97.23 m / 96.32 m x 9.14 m  x 3.05 m

Armament:
      1 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1906 Model
     Quick firing gun in deck mount
     on centreline forward
      2 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1906 Model
     Quick firing guns in deck mounts
     on side, all forward
      1 - 4.00" / 102 mm guns in single mounts, 30.00lbs / 13.61kg shells, 1906 Model
     Quick firing gun in deck mount
     on centreline aft
   Weight of broadside 120 lbs / 54 kg
   Shells per gun, main battery: 200
   6 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm   1.00" / 25 mm            -

   - Conning tower: 1.00" / 25 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 20,731 shp / 15,465 Kw = 29.25 kts
   Range 5,315nm at 12.00 kts
   Bunker at max displacement = 369 tons

Complement:
   104 - 136

Cost:
   £0.139 million / $0.556 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 1.3 %
   Armour: 6 tons, 0.4 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 3 tons, 0.2 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 2 tons, 0.2 %
   Machinery: 646 tons, 51.9 %
   Hull, fittings & equipment: 292 tons, 23.4 %
   Fuel, ammunition & stores: 246 tons, 19.7 %
   Miscellaneous weights: 40 tons, 3.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     329 lbs / 149 Kg = 10.3 x 4.0 " / 102 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.51
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 9.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.11
   Seaboat quality  (Average = 1.00): 1.12

Hull form characteristics:
   Hull has raised forecastle, rise forward of midbreak
   Block coefficient: 0.460
   Length to Beam Ratio: 10.53 : 1
   'Natural speed' for length: 17.78 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 62
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 3.00 ft / 0.91 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.00 ft / 5.49 m
      - Forecastle (20 %):   18.00 ft / 5.49 m (16.00 ft / 4.88 m aft of break)
      - Mid (35 %):      16.00 ft / 4.88 m (10.00 ft / 3.05 m aft of break)
      - Quarterdeck (15 %):   10.00 ft / 3.05 m
      - Stern:      10.00 ft / 3.05 m
      - Average freeboard:   12.50 ft / 3.81 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181.2 %
      - Above water (accommodation/working, high = better): 86.4 %
   Waterplane Area: 6,098 Square feet or 566 Square metres
   Displacement factor (Displacement / loading): 61 %
   Structure weight / hull surface area: 25 lbs/sq ft or 124 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.28
      - Overall: 0.54
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform

[Borys]

Very nice, looks the epoch.
Borys