Torpedoboot, Großes Torpedoboot and Zerstörer

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[miketr]

T-1 to T-60

tb-1896, Germany Torpedo Boat laid down 1896 (Engine 1890)

Displacement:
   402 t light; 415 t standard; 469 t normal; 512 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (208.99 ft / 205.71 ft) x 21.33 ft x (9.35 / 9.91 ft)
   (63.70 m / 62.70 m) x 6.50 m  x (2.85 / 3.02 m)

Armament:
      3 - 1.97" / 50.0 mm 40.0 cal guns - 3.66lbs / 1.66kg shells, 400 per gun
     Quick firing guns in deck mounts, 1896 Model
     3 x Single mounts on centreline, evenly spread
      4 - 0.31" / 8.0 mm 45.0 cal guns - 0.02lbs / 0.01kg shells, 15,000 per gun
     Machine guns in deck mounts, 1896 Model
     4 x Single mounts on sides, aft deck forward
      Weight of broadside 11 lbs / 5 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.39" / 10 mm         -               -

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 6,700 ihp / 4,998 Kw = 24.64 kts
   Range 2,000nm at 10.00 kts
   Bunker at max displacement = 97 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   49 - 65

Cost:
   £0.055 million / $0.219 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0.5 %
      - Guns: 2 tons, 0.5 %
   Armour: 3 tons, 0.6 %
      - Armament: 3 tons, 0.6 %
   Machinery: 286 tons, 61.0 %
   Hull, fittings & equipment: 99 tons, 21.0 %
   Fuel, ammunition & stores: 66 tons, 14.2 %
   Miscellaneous weights: 13 tons, 2.8 %
      - On freeboard deck: 13 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     97 lbs / 44 Kg = 25.3 x 2.0 " / 50 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.63
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 8.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.02
   Seaboat quality  (Average = 1.00): 0.95

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.400 / 0.412
   Length to Beam Ratio: 9.65 : 1
   'Natural speed' for length: 14.34 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 52
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.00 %,  9.84 ft / 3.00 m,  11.81 ft / 3.60 m
      - Forward deck:   20.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Aft deck:   50.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Quarter deck:   15.00 %,  7.87 ft / 2.40 m,  7.87 ft / 2.40 m
      - Average freeboard:      8.35 ft / 2.54 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 198.5 %
      - Above water (accommodation/working, high = better): 80.4 %
   Waterplane Area: 2,700 Square feet or 251 Square metres
   Displacement factor (Displacement / loading): 18 %
   Structure weight / hull surface area: 19 lbs/sq ft or 93 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.49
      - Overall: 0.55
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Trial Speed: 28
Bonus: 3.36