Black Prince, Great Britain Armoured Cruiser laid down 1884
Displacement:
7,627 t light; 7,927 t standard; 9,800 t normal; 11,299 t full load
Dimensions: Length overall / water x beam x draught
400.00 ft / 400.00 ft x 58.00 ft x 27.00 ft (normal load)
121.92 m / 121.92 m x 17.68 m x 8.23 m
Armament:
4 - 8.00" / 203 mm guns in single mounts, 232.96lbs / 105.67kg shells, 1884 Model
Breech loading guns in turrets (on barbettes)
on centreline, all forward
10 - 6.00" / 152 mm guns in single mounts, 98.28lbs / 44.58kg shells, 1884 Model
Breech loading guns in casemate mounts
on side, all aft
Weight of broadside 1,915 lbs / 868 kg
Shells per gun, main battery: 90
6 - 17.7" / 450 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.50" / 114 mm 250.00 ft / 76.20 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 96 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.00" / 25 mm 250.00 ft / 76.20 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: 4.00" / 102 mm 4.00" / 102 mm 4.00" / 102 mm
- Armour deck: 4.00" / 102 mm, Conning tower: 4.50" / 114 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 8,145 ihp / 6,076 Kw = 16.50 kts
Range 6,500nm at 12.00 kts
Bunker at max displacement = 3,372 tons (100% coal)
Complement:
492 - 640
Cost:
£0.692 million / $2.768 million
Distribution of weights at normal displacement:
Armament: 239 tons, 2.4 %
Armour: 2,686 tons, 27.4 %
- Belts: 785 tons, 8.0 %
- Torpedo bulkhead: 250 tons, 2.5 %
- Armament: 411 tons, 4.2 %
- Armour Deck: 1,195 tons, 12.2 %
- Conning Tower: 44 tons, 0.5 %
Machinery: 1,601 tons, 16.3 %
Hull, fittings & equipment: 3,101 tons, 31.6 %
Fuel, ammunition & stores: 2,173 tons, 22.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,583 lbs / 5,708 Kg = 54.0 x 8.0 " / 203 mm shells or 2.2 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 2.9 ft / 0.9 m
Roll period: 14.4 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.57
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.548
Length to Beam Ratio: 6.90 : 1
'Natural speed' for length: 20.00 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.00 ft / 6.71 m
- Forecastle (20 %): 19.00 ft / 5.79 m
- Mid (50 %): 19.00 ft / 5.79 m
- Quarterdeck (15 %): 19.00 ft / 5.79 m
- Stern: 19.00 ft / 5.79 m
- Average freeboard: 19.24 ft / 5.86 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 109.9 %
- Above water (accommodation/working, high = better): 103.8 %
Waterplane Area: 16,154 Square feet or 1,501 Square metres
Displacement factor (Displacement / loading): 126 %
Structure weight / hull surface area: 111 lbs/sq ft or 542 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.76
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
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.
Friday, January 05, 2007
A change of pace: the Black Prince (GB/CA/1884)
Some work that I had done a long time ago surfaced in the last few days. One of the designs is a ship named Black Prince, which I am calling the GB/CA/1884. This ship has 4-8in and 10-6in guns, all breachloaders. The armour basis is 4.5in. The maximum speed is 16.5 knots. The range is 6,500nm at 12 knots. This is the Springsharp report:
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