Torpedo Boats

[Desertfox]

RECLASSIFIED as Patrol-Torpedo boats

Lavi class, New Zion (ex-Cairo) Torpedo Boat laid down 1891

[Desertfox]

(ex-TB1885 class), New Zion (ex-DKB)

4 bought, 1 SUNK, 3 SCRAPPED

[Desertfox]

Osprey
Peregrine
Sphinx

Osprey class, New Zion (ex-NS, ex-IC) Torpedo Boat laid down 1893 (Engine 1905)

Displacement:
   351 t light; 362 t standard; 396 t normal; 423 t full load

Dimensions: Length overall / water x beam x draught
   190.00 ft / 190.00 ft x 18.00 ft x 8.50 ft (normal load)
   57.91 m / 57.91 m x 5.49 m  x 2.59 m

Armament:
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1905 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1905 Model
     Machine guns in deck mounts
     on side, all amidships
   Weight of broadside 27 lbs / 12 kg
   Shells per gun, main battery: 200
   4 - 18.0" / 457.2 mm above water torpedoes

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 1 shaft, 9,691 shp / 7,230 Kw = 27.00 kts
   Range 1,500nm at 10.00 kts
   Bunker at max displacement = 61 tons (90% coal)
     Caution: Delicate, lightweight machinery

Complement:
   43 - 57

Cost:
   £0.047 million / $0.190 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0.9 %
   Machinery: 230 tons, 58.1 %
   Hull, fittings & equipment: 114 tons, 28.7 %
   Fuel, ammunition & stores: 45 tons, 11.4 %
   Miscellaneous weights: 4 tons, 1.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     80 lbs / 36 Kg = 5.9 x 3.0 " / 76 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 0.5 ft / 0.2 m
   Roll period: 10.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.16
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0.477
   Length to Beam Ratio: 10.56 : 1
   'Natural speed' for length: 13.78 kts
   Power going to wave formation at top speed: 72 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      12.50 ft / 3.81 m
      - Forecastle (27 %):   12.50 ft / 3.81 m (9.50 ft / 2.90 m aft of break)
      - Mid (50 %):      9.50 ft / 2.90 m
      - Quarterdeck (15 %):   9.50 ft / 2.90 m
      - Stern:      9.50 ft / 2.90 m
      - Average freeboard:   10.31 ft / 3.14 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 195.4 %
      - Above water (accommodation/working, high = better): 36.7 %
   Waterplane Area: 2,137 Square feet or 199 Square metres
   Displacement factor (Displacement / loading): 24 %
   Structure weight / hull surface area: 19 lbs/sq ft or 94 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.47
      - Longitudinal: 4.31
      - Overall: 0.58
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is extremely poor