WesWorld

[SIZE=3]GB150 Type 1, Greek Subchaser Gunboat laid down 1938[/SIZE]

Displacement:
150 t light; 166 t standard; 202 t normal; 231 t full load

Dimensions: Length overall / water x beam x draught
154.05 ft / 147.64 ft x 16.40 ft x 5.91 ft (normal load)
46.96 m / 45.00 m x 5.00 m x 1.80 m

Armament:
2 - 2.95" / 75.0 mm guns (1x2 guns), 12.87lbs / 5.84kg shells, 1938 Model
Anti-aircraft guns in deck mount
on centreline forward
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1938 Model
Machine guns in deck mounts
on side, all amidships
Weight of broadside 27 lbs / 12 kg
Shells per gun, main battery: 750

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm - -
2nd: 0.98" / 25 mm - -

- Conning tower: 0.98" / 25 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1,134 shp / 846 Kw = 18.00 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 65 tons

Complement:
26 - 34

Cost:
£0.070 million / $0.280 million

Distribution of weights at normal displacement:
Armament: 3 tons, 1.7 %
Armour: 2 tons, 1.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.4 %
Machinery: 31 tons, 15.4 %
Hull, fittings & equipment: 94 tons, 46.3 %
Fuel, ammunition & stores: 52 tons, 25.6 %
Miscellaneous weights: 20 tons, 9.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
406 lbs / 184 Kg = 31.6 x 3.0 " / 75 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 0.4 ft / 0.1 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.32
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.494
Length to Beam Ratio: 9.00 : 1
'Natural speed' for length: 13.99 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 38
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 13.12 ft / 4.00 m
- Forecastle (20 %): 10.66 ft / 3.25 m
- Mid (50 %): 8.20 ft / 2.50 m
- Quarterdeck (15 %): 8.20 ft / 2.50 m
- Stern: 8.20 ft / 2.50 m
- Average freeboard: 9.26 ft / 2.82 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 79.1 %
- Above water (accommodation/working, high = better): 107.2 %
Waterplane Area: 1,669 Square feet or 155 Square metres
Displacement factor (Displacement / loading): 182 %
Structure weight / hull surface area: 23 lbs/sq ft or 114 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.80
- Longitudinal: 8.42
- Overall: 1.01
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather