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Original image by thesmilingassassin and modified by me.[/SIZE]
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Slivnitsa-class, Bulgarian Torpedo Boat laid down in 1931[/SIZE]
Eight sold to China 1940; two scrapped after collision.
Displacement:
607 t light; 627 t standard; 678 t normal; 719 t full load
Dimensions: Length overall / water x beam x draught
268.93 ft / 262.47 ft x 22.97 ft x 9.84 ft (normal load)
81.97 m / 80.00 m x 7.00 m x 3.00 m
Armament:
2 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1930 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 1 raised mount
2 - 0.79" / 20.0 mm guns (1x2 guns), 0.24lbs / 0.11kg shells, 1930 Model
Anti-aircraft guns in deck mount
on side
Weight of broadside 62 lbs / 28 kg
Shells per gun, main battery: 200
6 - 17.7" / 450 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm - -
3rd: 0.39" / 10 mm - -
- Conning tower: 0.79" / 20 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 20,000 shp / 14,920 Kw = 32.68 kts
Range 2,000nm at 15.00 kts
Bunker at max displacement = 92 tons
Complement:
66 - 86
Cost:
£0.313 million / $1.252 million
Distribution of weights at normal displacement:
Armament: 8 tons, 1.1 %
Armour: 5 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.2 %
Machinery: 337 tons, 49.7 %
Hull, fittings & equipment: 198 tons, 29.1 %
Fuel, ammunition & stores: 71 tons, 10.5 %
Miscellaneous weights: 60 tons, 8.8 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
161 lbs / 73 Kg = 5.3 x 3.9 " / 100 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 0.6 ft / 0.2 m
Roll period: 12.3 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.19
Seaboat quality (Average = 1.00): 0.79
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.400
Length to Beam Ratio: 11.43 : 1
'Natural speed' for length: 18.54 kts
Power going to wave formation at top speed: 70 %
Trim (Max stability = 0, Max steadiness = 100): 63
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.04 ft / 5.50 m
- Forecastle (20 %): 16.40 ft / 5.00 m
- Mid (30 %): 16.40 ft / 5.00 m (8.20 ft / 2.50 m aft of break)
- Quarterdeck (15 %): 8.20 ft / 2.50 m
- Stern: 8.20 ft / 2.50 m
- Average freeboard: 10.79 ft / 3.29 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 178.8 %
- Above water (accommodation/working, high = better): 53.8 %
Waterplane Area: 3,851 Square feet or 358 Square metres
Displacement factor (Displacement / loading): 51 %
Structure weight / hull surface area: 24 lbs/sq ft or 116 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.24
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
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