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- 1885-Class PCR (1900 Refit), Calder Republic Protected Cruiser laid down 1885
- Displacement:
- 4,904 t light; 5,150 t standard; 5,911 t normal; 6,520 t full load
- Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
- (365.81 ft / 360.89 ft) x 59.06 ft x (18.04 / 19.49 ft)
- (111.50 m / 110.00 m) x 18.00 m x (5.50 / 5.94 m)
- Armament:
- 1 - 12.01" / 305 mm 40.0 cal gun - 797.98lbs / 361.96kg shells, 80 per gun
- Breech loading gun in turret on barbette mount, 1885 Model
- 1 x Single mount on centreline, forward deck centre
- 2 - 5.12" / 130 mm 47.0 cal guns - 69.73lbs / 31.63kg shells, 200 per gun
- Breech loading guns in turret on barbette mount, 1900 Model
- 1 x Twin mount on centreline, aft deck centre
- 10 - 5.12" / 130 mm 47.0 cal guns - 69.73lbs / 31.63kg shells, 200 per gun
- Quick firing guns in casemate mounts, 1900 Model
- 10 x Single mounts on sides, evenly spread
- Weight of broadside 1,635 lbs / 742 kg
- Main Torpedoes
- 2 - 17.7" / 450 mm, 13.12 ft / 4.00 m torpedoes - 0.274 t each, 0.548 t total
- submerged bow & stern tubes
- 2nd Torpedoes
- 2 - 17.7" / 450 mm, 13.12 ft / 4.00 m torpedoes - 0.274 t each, 0.548 t total
- below water reloads
- Armour:
- - Belts: Width (max) Length (avg) Height (avg)
- Ends: Unarmoured
- - Torpedo Bulkhead - Strengthened structural bulkheads:
- 0.79" / 20 mm 269.03 ft / 82.00 m 16.57 ft / 5.05 m
- Beam between torpedo bulkheads 55.77 ft / 17.00 m
- - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
- Main: 11.0" / 280 mm 5.91" / 150 mm 7.09" / 180 mm
- 2nd: 5.91" / 150 mm 2.95" / 75 mm 3.94" / 100 mm
- 3rd: 1.97" / 50 mm - 3.94" / 100 mm
- - Protected deck - single deck:
- For and Aft decks: 1.97" / 50 mm
- Forecastle: 1.97" / 50 mm Quarter deck: 1.97" / 50 mm
- - Conning towers: Forward 7.87" / 200 mm, Aft 0.00" / 0 mm
- Machinery:
- Coal fired boilers, complex reciprocating steam engines,
- Direct drive, 2 shafts, 8,531 ihp / 6,364 Kw = 18.00 kts
- Range 5,500nm at 10.00 kts
- Bunker at max displacement = 1,370 tons (100% coal)
- Complement:
- 336 - 438
- Cost:
- £0.518 million / $2.074 million
- Distribution of weights at normal displacement:
- Armament: 316 tons, 5.4 %
- - Guns: 315 tons, 5.3 %
- - Weapons: 2 tons, 0.0 %
- Armour: 964 tons, 16.3 %
- - Torpedo bulkhead: 130 tons, 2.2 %
- - Armament: 239 tons, 4.0 %
- - Armour Deck: 540 tons, 9.1 %
- - Conning Tower: 55 tons, 0.9 %
- Machinery: 1,658 tons, 28.0 %
- Hull, fittings & equipment: 1,965 tons, 33.2 %
- Fuel, ammunition & stores: 1,008 tons, 17.0 %
- Miscellaneous weights: 0 tons, 0.0 %
- Overall survivability and seakeeping ability:
- Survivability (Non-critical penetrating hits needed to sink ship):
- 5,449 lbs / 2,472 Kg = 6.8 x 12.0 " / 305 mm shells or 5.8 torpedoes
- Stability (Unstable if below 1.00): 1.58
- Metacentric height 4.9 ft / 1.5 m
- Roll period: 11.2 seconds
- Steadiness - As gun platform (Average = 50 %): 96 %
- - Recoil effect (Restricted arc if above 1.00): 0.28
- Seaboat quality (Average = 1.00): 1.91
- Hull form characteristics:
- Hull has raised forecastle,
- a ram bow and a cruiser stern
- Block coefficient (normal/deep): 0.538 / 0.549
- Length to Beam Ratio: 6.11 : 1
- 'Natural speed' for length: 19.00 kts
- Power going to wave formation at top speed: 46 %
- Trim (Max stability = 0, Max steadiness = 100): 50
- Bow angle (Positive = bow angles forward): -30.00 degrees
- Stern overhang: -6.56 ft / -2.00 m
- Freeboard (% = length of deck as a percentage of waterline length):
- Fore end, Aft end
- - Forecastle: 20.00 %, 19.69 ft / 6.00 m, 19.69 ft / 6.00 m
- - Forward deck: 30.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
- - Aft deck: 35.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
- - Quarter deck: 15.00 %, 13.12 ft / 4.00 m, 13.12 ft / 4.00 m
- - Average freeboard: 14.44 ft / 4.40 m
- Ship tends to be wet forward
- Ship space, strength and comments:
- Space - Hull below water (magazines/engines, low = better): 116.9 %
- - Above water (accommodation/working, high = better): 109.4 %
- Waterplane Area: 14,708 Square feet or 1,366 Square metres
- Displacement factor (Displacement / loading): 110 %
- Structure weight / hull surface area: 107 lbs/sq ft or 521 Kg/sq metre
- Hull strength (Relative):
- - Cross-sectional: 0.93
- - Longitudinal: 2.04
- - Overall: 1.00
- Cramped machinery, storage, compartmentation space
- Adequate accommodation and workspace room
- Ship has slow, easy roll, a good, steady gun platform
- Excellent seaboat, comfortable, can fire her guns in the heaviest weather
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