大型猎潜艇，&（扫雷艇）

xsuny · 发表于 2011-6-27 18:43

1892安远轻型防护巡洋舰, chile 穹甲巡洋舰（穹面钢甲快船）Cruiser laid down 1929

Displacement:
624 t light; 649 t standard; 791 t normal; 905 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(243.95 ft / 229.66 ft) x 22.97 ft x (10.50 / 11.59 ft)
(74.36 m / 70.00 m) x 7.00 m  x (3.20 / 3.53 m)

Armament:
   6 - 2.99" / 76.0 mm 40.0 cal guns - 12.84lbs / 5.82kg shells, 200 per gun
   Dual purpose guns in deck and hoist mounts, 1929 Model
   3 x 2 row twin mounts on centreline ends, majority aft
      1 raised mount aft - superfiring
   6 - 0.91" / 23.0 mm 40.0 cal guns - 0.36lbs / 0.16kg shells, 450 per gun
   Machine guns in deck mounts, 1929 Model
   6 x Single mounts on sides, evenly spread
   Weight of broadside 79 lbs / 36 kg
   Main Torpedoes
   6 - 17.7" / 450 mm, 19.69 ft / 6.00 m torpedoes - 0.985 t each, 5.908 t total
In 2 sets of deck mounted centre rotating tubes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm       -                -
2nd: 0.51" / 13 mm       -                -

Machinery:
Diesel Internal combustion motors,
Electric cruising motors plus geared drives, 2 shafts, 13,398 ihp / 9,995 Kw = 28.00 kts
Range 3,750nm at 14.00 kts
Bunker at max displacement = 256 tons

Complement:
73 - 96

Cost:
£0.330 million / $1.320 million

Distribution of weights at normal displacement:
Armament: 33 tons, 4.2%
   - Guns: 22 tons, 2.7%
   - Weapons: 12 tons, 1.5%
Armour: 16 tons, 2.1%
   - Armament: 16 tons, 2.1%
Machinery: 383 tons, 48.4%
Hull, fittings & equipment: 168 tons, 21.2%
Fuel, ammunition & stores: 167 tons, 21.1%
Miscellaneous weights: 24 tons, 3.0%
   - Hull below water: 24 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
   185 lbs / 84 Kg = 13.8 x 3.0 " / 76 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 0.6 ft / 0.2 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.61
Seaboat quality  (Average = 1.00): 0.88

Hull form characteristics:
Hull has a flush deck,
   a normal bow and large transom stern
Block coefficient (normal/deep): 0.500 / 0.518
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 17.29 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 80
Bow angle (Positive = bow angles forward): 35.00 degrees
Stern overhang: 2.62 ft / 0.80 m
Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
   - Forecastle: 22.00%,  16.67 ft / 5.08 m,  13.16 ft / 4.01 m
   - Forward deck: 28.00%,  13.16 ft / 4.01 m,  9.94 ft / 3.03 m
   - Aft deck: 30.00%,  9.94 ft / 3.03 m,  10.27 ft / 3.13 m
   - Quarter deck: 20.00%,  10.27 ft / 3.13 m,  10.60 ft / 3.23 m
   - Average freeboard:       11.55 ft / 3.52 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 168.2%
      - Above water (accommodation/working, high = better): 76.6%
Waterplane Area: 3,654 Square feet or 340 Square metres
Displacement factor (Displacement / loading): 67%
Structure weight / hull surface area: 22 lbs/sq ft or 107 Kg/sq metre
Hull strength (Relative):
      - Cross-sectional: 0.45
      - Longitudinal: 2.53
      - Overall: 0.53
Cramped machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather