Baltic Destroyers for 1915

[ledeper]

Island-class batch 3 Dd 16-30, BCS Destroyer laid down 1915 (Engine 1912)

Displacement:
   1.000 t light; 1.061 t standard; 1.283 t normal; 1.461 t full load

Dimensions: Length overall / water x beam x draught
   327,59 ft / 324,80 ft x 29,53 ft x 11,48 ft (normal load)
   99,85 m / 99,00 m x 9,00 m  x 3,50 m

Armament:
      4 - 5,91" / 150 mm guns in single mounts, 102,98lbs / 46,71kg shells, 1915 Model
     Quick firing guns in deck mounts
     on centreline ends, majority forward, 2 raised mounts - superfiring
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, all amidships
   Weight of broadside 420 lbs / 190 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 20.078 shp / 14.978 Kw = 29,25 kts
   Range 6.500nm at 12,00 kts
   Bunker at max displacement = 400 tons

Complement:
   106 - 139

Cost:
   £0,229 million / $0,917 million

Distribution of weights at normal displacement:
   Armament: 52 tons, 4,1 %
   Armour: 6 tons, 0,5 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 6 tons, 0,5 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 0 tons, 0,0 %
   Machinery: 562 tons, 43,8 %
   Hull, fittings & equipment: 340 tons, 26,5 %
   Fuel, ammunition & stores: 283 tons, 22,1 %
   Miscellaneous weights: 40 tons, 3,1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     375 lbs / 170 Kg = 3,6 x 5,9 " / 150 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,55
   Metacentric height 1,7 ft / 0,5 m
   Roll period: 9,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 58 %
         - Recoil effect (Restricted arc if above 1.00): 0,45
   Seaboat quality  (Average = 1.00): 1,17

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,408
   Length to Beam Ratio: 11,00 : 1
   'Natural speed' for length: 18,02 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      13,12 ft / 4,00 m
      - Forecastle (10 %):   13,12 ft / 4,00 m
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (15 %):   9,35 ft / 2,85 m
      - Stern:      9,35 ft / 2,85 m
      - Average freeboard:   11,90 ft / 3,63 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 175,9 %
      - Above water (accommodation/working, high = better): 102,9 %
   Waterplane Area: 5.931 Square feet or 551 Square metres
   Displacement factor (Displacement / loading): 62 %
   Structure weight / hull surface area: 30 lbs/sq ft or 146 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

firecontrol 25t
radio 10t
torpedoes 5t

[Borys]

ROF 1-2 per minute, small chances of hitting anything?

Borys

[The Rock Doctor]

ECS doesn't have much experience with destroyers - maybe they've not encountered the problem yet.

[ledeper]

Island-class batch 3 Dd 16-30, BCS Destroyer laid down 1915 (Engine 1912)

Displacement:
   1.000 t light; 1.046 t standard; 1.267 t normal; 1.443 t full load

Dimensions: Length overall / water x beam x draught
   327,59 ft / 324,80 ft x 29,53 ft x 11,48 ft (normal load)
   99,85 m / 99,00 m x 9,00 m  x 3,50 m

Armament:
      4 - 4,92" / 125 mm guns in single mounts, 59,59lbs / 27,03kg shells, 1915 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      4 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1915 Model
     Quick firing guns in deck mounts
     on side, all amidships
   Weight of broadside 246 lbs / 112 kg
   Shells per gun, main battery: 150
   4 - 18,0" / 457,2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 21.312 shp / 15.899 Kw = 29,75 kts
   Range 6.500nm at 12,00 kts
   Bunker at max displacement = 397 tons

Complement:
   106 - 138

Cost:
   £0,212 million / $0,848 million

Distribution of weights at normal displacement:
   Armament: 31 tons, 2,4 %
   Armour: 4 tons, 0,3 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 4 tons, 0,3 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 0 tons, 0,0 %
   Machinery: 607 tons, 47,9 %
   Hull, fittings & equipment: 318 tons, 25,1 %
   Fuel, ammunition & stores: 267 tons, 21,1 %
   Miscellaneous weights: 40 tons, 3,2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     370 lbs / 168 Kg = 6,2 x 4,9 " / 125 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,60
   Metacentric height 1,8 ft / 0,5 m
   Roll period: 9,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 57 %
         - Recoil effect (Restricted arc if above 1.00): 0,26
   Seaboat quality  (Average = 1.00): 1,15

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,403
   Length to Beam Ratio: 11,00 : 1
   'Natural speed' for length: 18,02 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      13,12 ft / 4,00 m
      - Forecastle (10 %):   13,12 ft / 4,00 m
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (15 %):   9,35 ft / 2,85 m
      - Stern:      9,35 ft / 2,85 m
      - Average freeboard:   11,90 ft / 3,63 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 176,6 %
      - Above water (accommodation/working, high = better): 102,6 %
   Waterplane Area: 5.913 Square feet or 549 Square metres
   Displacement factor (Displacement / loading): 64 %
   Structure weight / hull surface area: 28 lbs/sq ft or 137 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 adequate

firecontrol 25t
radio 10t
torpedoes 5t