Island-class batch 3 Dd 16-21, ESC Destroyer laid down 1915 (Engine 1912)
Displacement:
1.000 t light; 1.079 t standard; 1.303 t normal; 1.482 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:
6 - 5,91" / 150 mm guns (3x2 guns), 102,98lbs / 46,71kg shells, 1915 Model
Quick firing guns in deck mounts
on centreline ends, majority forward, 1 raised mount - 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 626 lbs / 284 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, 19.213 shp / 14.333 Kw = 28,85 kts
Range 6.500nm at 12,00 kts
Bunker at max displacement = 403 tons
Complement:
107 - 140
Cost:
£0,252 million / $1,009 million
Distribution of weights at normal displacement:
Armament: 78 tons, 6,0 %
Armour: 7 tons, 0,5 %
- Belts: 0 tons, 0,0 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 7 tons, 0,5 %
- Armour Deck: 0 tons, 0,0 %
- Conning Tower: 0 tons, 0,0 %
Machinery: 519 tons, 39,9 %
Hull, fittings & equipment: 356 tons, 27,3 %
Fuel, ammunition & stores: 303 tons, 23,2 %
Miscellaneous weights: 40 tons, 3,1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
368 lbs / 167 Kg = 3,6 x 5,9 " / 150 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,54
Metacentric height 1,7 ft / 0,5 m
Roll period: 9,6 seconds
Steadiness - As gun platform (Average = 50 %): 59 %
- Recoil effect (Restricted arc if above 1.00): 0,65
Seaboat quality (Average = 1.00): 1,19
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,414
Length to Beam Ratio: 11,00 : 1
'Natural speed' for length: 18,02 kts
Power going to wave formation at top speed: 60 %
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): 177,7 %
- Above water (accommodation/working, high = better): 102,4 %
Waterplane Area: 5.955 Square feet or 553 Square metres
Displacement factor (Displacement / loading): 59 %
Structure weight / hull surface area: 31 lbs/sq ft or 152 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 1,44
- Overall: 0,55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
firecontrol 25t
radio 10t
torpedoes 5t
Isn't 15cm a little heavy for use on a DD at this point in time?
It was considered to develop a 115mm gun ,instead decided to use the new 150mm Quick firing gun as to keep uniformity in medium caliber guns.
I only ask as I tried to put a 6" on one and was met w/ concerns over heavy shells and lively ships.
IMO 6" twins on such a vessel are ridiculous. The Narviks found such mounts barely usable, yet were almost three times as large.
But then again, I'm the Dilusional Grumpy ....
Borys
Yes, too large guns. Misc weight reserve could be higher too.
Island-class batch 3 Dd 16-21, BCS Destroyer laid down 1915 (Engine 1912)
Displacement:
1.000 t light; 1.056 t standard; 1.278 t normal; 1.455 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:
6 - 4,92" / 125 mm guns (3x2 guns), 59,59lbs / 27,03kg shells, 1915 Model
Quick firing guns in deck mounts
on centreline ends, majority forward, 1 raised mount - 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 365 lbs / 166 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, 18.901 shp / 14.100 Kw = 28,85 kts
Range 6.500nm at 12,00 kts
Bunker at max displacement = 399 tons
Complement:
106 - 138
Cost:
£0,219 million / $0,875 million
Distribution of weights at normal displacement:
Armament: 46 tons, 3,6 %
Armour: 6 tons, 0,4 %
- Belts: 0 tons, 0,0 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 6 tons, 0,4 %
- Armour Deck: 0 tons, 0,0 %
- Conning Tower: 0 tons, 0,0 %
Machinery: 551 tons, 43,1 %
Hull, fittings & equipment: 328 tons, 25,7 %
Fuel, ammunition & stores: 278 tons, 21,8 %
Miscellaneous weights: 70 tons, 5,5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
380 lbs / 172 Kg = 6,4 x 4,9 " / 125 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,49
Metacentric height 1,6 ft / 0,5 m
Roll period: 9,8 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0,40
Seaboat quality (Average = 1.00): 1,21
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,406
Length to Beam Ratio: 11,00 : 1
'Natural speed' for length: 18,02 kts
Power going to wave formation at top speed: 60 %
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): 172,4 %
- Above water (accommodation/working, high = better): 102,8 %
Waterplane Area: 5.925 Square feet or 550 Square metres
Displacement factor (Displacement / loading): 66 %
Structure weight / hull surface area: 29 lbs/sq ft or 141 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 1,37
- Overall: 0,55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily
firecontrol 25t
radio 10t
torpedoes 5t
Reserve 30 t
If i read the rules correctly, it seems twin mounts must have hoists.
Other then that, not a bad ship at all :)
Hoists for T2 are better ;)
...Good Contre-Torpilleur ;)