Black Prince, anachronistic design, Great Britain Armoured Cruiser laid down 1907 (Engine 1909)
Displacement:
7,642 t light; 8,094 t standard; 9,239 t normal; 10,155 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(404.00 ft / 400.00 ft) x 60.00 ft x (27.00 / 29.09 ft)
(123.14 m / 121.92 m) x 18.29 m x (8.23 / 8.87 m)
Armament:
4 - 8.00" / 203 mm 45.0 cal guns - 250.00lbs / 113.40kg shells, 150 per gun
Breech loading guns in turret on barbette mounts , 1907 Model
2 x Twin mounts on centreline ends, evenly spread
12 - 7.00" / 178 mm 45.0 cal guns - 172.96lbs / 78.45kg shells, 150 per gun
Breech loading guns in turret on barbette mounts , 1907 Model
2 x Twin mounts on centreline ends, evenly spread
2 raised mounts
4 x Twin mounts on sides, evenly spread
4 raised mounts
4 - 4.00" / 102 mm 45.0 cal guns - 32.27lbs / 14.64kg shells, 150 per gun
Quick firing guns in turret on barbette mounts , 1907 Model
2 x Twin mounts on sides, forward deck forward
Weight of broadside 3,205 lbs / 3,205 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 265.00 ft / 80.77 m 15.00 ft / 4.57 m
Ends: Unarmoured
Main Belt covers 102 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.50" / 38 mm 265.00 ft / 80.77 m 27.00 ft / 8.23 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.50" / 114 mm 4.00" / 102 mm 4.50" / 114 mm
2nd: 4.50" / 114 mm 4.00" / 102 mm 4.50" / 114 mm
3rd: 3.00" / 76 mm 3.00" / 76 mm 3.00" / 76 mm
- Armour deck: 2.00" / 51 mm, Conning tower: 4.50" / 114 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 1 shaft, 22,024 shp / 16,430 Kw = 22.00 kts
Range 6,500nm at 12.00 kts
Bunker at max displacement = 2,061 tons (100% coal)
Complement:
470 - 612
Cost:
£0.726 million / $2.905 million
Distribution of weights at normal displacement:
Armament: 731 tons, 7.9 %
Armour: 2,751 tons, 29.8 %
- Belts: 770 tons, 8.3 %
- Torpedo bulkhead: 397 tons, 4.3 %
- Armament: 973 tons, 10.5 %
- Armour Deck: 568 tons, 6.1 %
- Conning Tower: 43 tons, 0.5 %
Machinery: 1,101 tons, 11.9 %
Hull, fittings & equipment: 3,427 tons, 37.1 %
Fuel, ammunition & stores: 1,597 tons, 17.3 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,037 lbs / 5,460 Kg = 47.0 x 8.0 " / 203 mm shells or 2.6 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 2.4 ft / 0.7 m
Roll period: 16.4 seconds
Steadiness - As gun platform (Average = 50 %): 46 %
- Recoil effect (Restricted arc if above 1.00): 0.96
Seaboat quality (Average = 1.00): 1.12
Hull form characteristics:
Hull has a flush deck,
a ram bow and a round stern
Block coefficient (normal/deep): 0.499 / 0.509
Length to Beam Ratio: 6.67 : 1
'Natural speed' for length: 20.00 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 37
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 4.00 ft / 1.22 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 21.00 ft / 6.40 m, 18.00 ft / 5.49 m
- Forward deck: 30.00 %, 18.00 ft / 5.49 m, 17.00 ft / 5.18 m
- Aft deck: 35.00 %, 17.00 ft / 5.18 m, 17.00 ft / 5.18 m
- Quarter deck: 15.00 %, 17.00 ft / 5.18 m, 17.00 ft / 5.18 m
- Average freeboard: 17.59 ft / 5.36 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 104.9 %
- Above water (accommodation/working, high = better): 107.2 %
Waterplane Area: 15,354 Square feet or 1,426 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 128 lbs/sq ft or 627 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.65
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Thursday, March 15, 2007
Another anachronistic Black Prince design
I have a set of anachronistic ship drawings that I really like. They do not work very well in Springsharp, but I like them anyway. This design is based on an anachronistic Black Prince design (designated BB-2) that I drew sometime in the latter 1980's. I have the drawing, although I seem not be able to take a good photograph, for some reason:
You can at least get the idea. They are 1918-ish designs, with the 1860s dimensions and armour thickness. The armament is 4-8in/45 BLR, 12-7in/45 BLR, and 4-4in QF guns. The armour basis is 4.5in. This is the best Springsharp design that I was able to achieve:
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