Destroyer Baltic Confederation

[ledeper]

Island Class , Baltic Confederation       Destroyer laid down 1912

Displacement:
   953 t light; 996 t standard; 1.184 t normal; 1.335 t full load

Dimensions: Length overall / water x beam x draught
   285,36 ft / 278,87 ft x 26,25 ft x 11,48 ft (normal load)
   86,98 m / 85,00 m x 8,00 m  x 3,50 m

Armament:
      5 - 4,00" / 102 mm guns in single mounts, 32,00lbs / 14,51kg shells, 1912 Model
     Quick firing guns in deck mounts
     on centreline ends, majority forward, 2 raised mounts - superfiring
      4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,89kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side, all amidships
   Weight of broadside 168 lbs / 76 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:   0,50" / 13 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 24.490 shp / 18.269 Kw = 30,00 kts
   Range 4.000nm at 14,00 kts
   Bunker at max displacement = 339 tons

Complement:
   100 - 131

Cost:
   £0,137 million / $0,547 million

Distribution of weights at normal displacement:
   Armament: 21 tons, 1,8 %
   Armour: 5 tons, 0,5 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 5 tons, 0,5 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 0 tons, 0,0 %
   Machinery: 613 tons, 51,7 %
   Hull, fittings & equipment: 259 tons, 21,9 %
   Fuel, ammunition & stores: 231 tons, 19,5 %
   Miscellaneous weights: 55 tons, 4,6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     256 lbs / 116 Kg = 8,0 x 4,0 " / 102 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,41
   Metacentric height 1,2 ft / 0,4 m
   Roll period: 10,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 55 %
         - Recoil effect (Restricted arc if above 1.00): 0,29
   Seaboat quality  (Average = 1.00): 1,10

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,493
   Length to Beam Ratio: 10,63 : 1
   'Natural speed' for length: 16,70 kts
   Power going to wave formation at top speed: 70 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 20,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      17,81 ft / 5,43 m
      - Forecastle (20 %):   12,99 ft / 3,96 m
      - Mid (50 %):      12,99 ft / 3,96 m
      - Quarterdeck (15 %):   12,99 ft / 3,96 m
      - Stern:      12,99 ft / 3,96 m
      - Average freeboard:   13,38 ft / 4,08 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 186,0 %
      - Above water (accommodation/working, high = better): 70,2 %
   Waterplane Area: 4.846 Square feet or 450 Square metres
   Displacement factor (Displacement / loading): 54 %
   Structure weight / hull surface area: 23 lbs/sq ft or 112 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,42
      - Longitudinal: 2,41
      - Overall: 0,50
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped

[The Rock Doctor]

The cross-sectional hull strength can't be below 0.50.  If you remove one 4", and reduce the freeboard a bit, you might be able to do it with minimal fuss.

[ledeper]

Island Class, Baltic Confederation Destroyer laid down 1912

Displacement:
   950 t light; 988 t standard; 1.150 t normal; 1.279 t full load

Dimensions: Length overall / water x beam x draught
   302,08 ft / 295,28 ft x 26,25 ft x 11,48 ft (normal load)
   92,07 m / 90,00 m x 8,00 m  x 3,50 m

Armament:
      4 - 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 raised mounts - superfiring
      4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,89kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side, all amidships
   Weight of broadside 136 lbs / 62 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:   0,50" / 13 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 22.461 shp / 16.756 Kw = 30,00 kts
   Range 3.500nm at 14,00 kts
   Bunker at max displacement = 291 tons

Complement:
   98 - 128

Cost:
   £0,130 million / $0,519 million

Distribution of weights at normal displacement:
   Armament: 17 tons, 1,5 %
   Armour: 4 tons, 0,4 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 4 tons, 0,4 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 0 tons, 0,0 %
   Machinery: 588 tons, 51,1 %
   Hull, fittings & equipment: 285 tons, 24,8 %
   Fuel, ammunition & stores: 200 tons, 17,4 %
   Miscellaneous weights: 55 tons, 4,8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     287 lbs / 130 Kg = 9,0 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: 10,2 seconds
   Steadiness   - As gun platform (Average = 50 %): 56 %
         - Recoil effect (Restricted arc if above 1.00): 0,23
   Seaboat quality  (Average = 1.00): 1,13

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,452
   Length to Beam Ratio: 11,25 : 1
   'Natural speed' for length: 17,18 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 20,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18,70 ft / 5,70 m
      - Forecastle (20 %):   11,91 ft / 3,63 m
      - Mid (50 %):      11,91 ft / 3,63 m
      - Quarterdeck (15 %):   11,91 ft / 3,63 m
      - Stern:      11,91 ft / 3,63 m
      - Average freeboard:   12,45 ft / 3,80 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181,9 %
      - Above water (accommodation/working, high = better): 69,7 %
   Waterplane Area: 4.953 Square feet or 460 Square metres
   Displacement factor (Displacement / loading): 58 %
   Structure weight / hull surface area: 26 lbs/sq ft or 126 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 2,04
      - Overall: 0,57
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped

[The Rock Doctor]

That works...

[Korpen]

Over all she is alright, but...

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,452
   Length to Beam Ratio: 11,25 : 1
   'Natural speed' for length: 17,18 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 20,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18,70 ft / 5,70 m
      - Forecastle (20 %):   11,91 ft / 3,63 m
      - Mid (50 %):      11,91 ft / 3,63 m
      - Quarterdeck (15 %):   11,91 ft / 3,63 m
      - Stern:      11,91 ft / 3,63 m
      - Average freeboard:   12,45 ft / 3,80 m
   Ship tends to be wet forward

...do you not think that a stem more then 2m higher then the rest of the freebord is a bit extreme (or at least look very odd)?

[ledeper]

Island Class, Baltic Confederation Destroyer laid down 1912

Displacement:
   940 t light; 978 t standard; 1.139 t normal; 1.268 t full load

Dimensions: Length overall / water x beam x draught
   300,35 ft / 295,28 ft x 26,25 ft x 11,48 ft (normal load)
   91,55 m / 90,00 m x 8,00 m  x 3,50 m

Armament:
      4 - 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 raised mounts - superfiring
      4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,89kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side, all amidships
   Weight of broadside 136 lbs / 62 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:   0,50" / 13 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 22.270 shp / 16.613 Kw = 30,00 kts
   Range 3.500nm at 14,00 kts
   Bunker at max displacement = 289 tons

Complement:
   97 - 127

Cost:
   £0,129 million / $0,514 million

Distribution of weights at normal displacement:
   Armament: 17 tons, 1,5 %
   Armour: 4 tons, 0,4 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 4 tons, 0,4 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 0 tons, 0,0 %
   Machinery: 581 tons, 51,0 %
   Hull, fittings & equipment: 282 tons, 24,8 %
   Fuel, ammunition & stores: 199 tons, 17,5 %
   Miscellaneous weights: 55 tons, 4,8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     289 lbs / 131 Kg = 9,0 x 4,0 " / 102 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,39
   Metacentric height 1,2 ft / 0,4 m
   Roll period: 10,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 54 %
         - Recoil effect (Restricted arc if above 1.00): 0,23
   Seaboat quality  (Average = 1.00): 1,08

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,448
   Length to Beam Ratio: 11,25 : 1
   'Natural speed' for length: 17,18 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 20,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      13,94 ft / 4,25 m
      - Forecastle (20 %):   11,91 ft / 3,63 m
      - Mid (50 %):      11,91 ft / 3,63 m
      - Quarterdeck (15 %):   11,91 ft / 3,63 m
      - Stern:      11,91 ft / 3,63 m
      - Average freeboard:   12,07 ft / 3,68 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181,8 %
      - Above water (accommodation/working, high = better): 70,2 %
   Waterplane Area: 4.935 Square feet or 459 Square metres
   Displacement factor (Displacement / loading): 58 %
   Structure weight / hull surface area: 26 lbs/sq ft or 129 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 1,89
      - Overall: 0,57
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped