Ship Designs of the Greek Navy

[miketr]

The Greeks found the blue prints in a draw at the Athen's Shipyard and the first Greek TB is based heavily off their former Overlords last pre-war design.  Two are to be built and will serve as division leaders for the eleven former Hapsburg TB's.

TB-1915, Greece Large Torpedo Boat laid down 1915 (Engine 1912)

Displacement:
   750 t light; 776 t standard; 834 t normal; 881 t full load

Dimensions: Length overall / water x beam x draught
   246.06 ft / 246.06 ft x 24.61 ft x 9.84 ft (normal load)
   75.00 m / 75.00 m x 7.50 m  x 3.00 m

Armament:
      2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1915 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      4 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1915 Model
     Breech loading guns in deck mounts
     on side, all amidships
   Weight of broadside 71 lbs / 32 kg
   Shells per gun, main battery: 250
   4 - 18.0" / 457.2 mm above water torpedoes

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

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 21,000 shp / 15,666 Kw = 29.88 kts
   Range 2,300nm at 10.00 kts
   Bunker at max displacement = 104 tons (100% coal)

Complement:
   76 - 100

Cost:
   £0.141 million / $0.565 million

Distribution of weights at normal displacement:
   Armament: 9 tons, 1.1 %
   Armour: 9 tons, 1.1 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 9 tons, 1.1 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 453 tons, 54.3 %
   Hull, fittings & equipment: 244 tons, 29.3 %
   Fuel, ammunition & stores: 85 tons, 10.1 %
   Miscellaneous weights: 35 tons, 4.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     212 lbs / 96 Kg = 6.0 x 4.1 " / 105 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.14
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 11.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.21
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.490
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 15.69 kts
   Power going to wave formation at top speed: 73 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   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:      18.04 ft / 5.50 m
      - Forecastle (20 %):   13.94 ft / 4.25 m
      - Mid (50 %):      12.80 ft / 3.90 m
      - Quarterdeck (15 %):   11.65 ft / 3.55 m
      - Stern:      11.65 ft / 3.55 m
      - Average freeboard:   13.15 ft / 4.01 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 188.3 %
      - Above water (accommodation/working, high = better): 85.0 %
   Waterplane Area: 3,998 Square feet or 371 Square metres
   Displacement factor (Displacement / loading): 43 %
   Structure weight / hull surface area: 25 lbs/sq ft or 124 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 3.93
      - Overall: 0.61
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform

Misc 35 tons: 25 tons heavy radio, 4 tons 4 torpedoes & 6 tons construction reserve
Based on Ottoman Ejder Class Large TB's of 1911.

Trial Speed: 31