The new miniture submarine's of the Latvian Navy. These ships have been built to fuiltify the requirments of the subchaser training fleet, to serve as coastal defense ships, and to serve as harbor assault ships.
Baltica, Latvian Minisub laid down 1938
Displacement:
25 t light; 28 t standard; 32 t normal; 35 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(42.45 ft / 42.45 ft) x 8.00 ft x (6.00 / 6.45 ft)
(12.94 m / 12.94 m) x 2.44 m x (1.83 / 1.97 m)
Armament:
2 - 21.0" / 533 mm, 2.000 ft / 4.57 m torpedoes - 1.700 t each, 3.400 t total
In 2 sets of submerged bow tubes
Machinery:
Petrol Internal combustion generators plus batteries,
Electric motors, 1 shaft, 356 shp / 266 Kw = 14.00 kts
Range 1,450nm at 10.00 kts
Bunker at max displacement = 7 tons
Complement:
6 - 8
Cost:
£0.013 million / $0.051 million
Distribution of weights at normal displacement:
Armament: 2 tons, 6.7 %
- Torpedoes: 2 tons, 6.7 %
Machinery: 10 tons, 30.5 %
Hull, fittings & equipment: 7 tons, 22.1 %
Fuel, ammunition & stores: 7 tons, 20.4 %
Miscellaneous weights: 7 tons, 20.3 %
- Hull void weights: 6 tons
- On freeboard deck: 1 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
-10 lbs / -5 Kg = -0.1 x 6 " / 152 mm shells or NaN torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 0.2 ft / 0.1 m
Roll period: 8.1 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00
Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.550 / 0.559
Length to Beam Ratio: 5.31 : 1
'Natural speed' for length: 6.52 kts
Power going to wave formation at top speed: 83 %
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 (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 0.00 ft / 0.00 m, 0.00 ft / 0.00 m
- Forward deck: 30.00 %, 0.00 ft / 0.00 m, 0.00 ft / 0.00 m
- Aft deck: 35.00 %, 0.00 ft / 0.00 m, 0.00 ft / 0.00 m
- Quarter deck: 15.00 %, 0.00 ft / 0.00 m, 0.00 ft / 0.00 m
- Average freeboard: 0.00 ft / 0.00 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): -180.7 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 230 Square feet or 21 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 19 lbs/sq ft or 91 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.46
- Longitudinal: 3.76
- Overall: 1.60
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability
.5t deck weight: 1 single 23 mm gun and 1,000 rounds of ammo.
This post has been edited 1 times, last edit by "TexanCowboy" (Jul 5th 2010, 9:05pm)