WesWorld

The Latvian Navy maintains a force of five submarines, intended to engage in maritime area denial in conjunction with minefields, aircraft, and surface ships. There are additionally two small Atlantean-built midget submarines acquired for the purpose of... well, their purpose is still unclear, I suppose.

Baltica, Latvian Miniature Submarine 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

Notes:
.5t deck weight: 1 single 23 mm gun and 1,000 rounds of ammo.

Europa class Coastal Submarine

Date: 1940
Coastal
Armament 1x3" DP, 2x25 mm machine guns
ElecHP: 850 hp
DieselHP: 1600 hp
Crew: 27
wt fuel&batts: 167t
Light Displacement 448t
Loaded Displacement 506t
Full Displacement 559t
Reserve buoyancy: 10%
Max Surf Speed: 15.1 knots
Max Sub Speed: 8.5 knots

Length: 54.0 meters
Beam: 5.0 meters
Draft: 4.15 meters
Crush depth: 212.5 meters
#TT 6 x 533mm (4 bow, 2 stern) (2 reload torpedoes per tube, 12 total. 4 torpedoes simmed as mines, stored aft. 8 torpedoes simmed as part of misc weight, stored forwards.)
Mines: 6 tons (used to simulate four torpedoes, NOT mines)
Tons Oil: 50.0t
Tons Battery: 119.0t
Miscellaneous Weight: 20 tons

Surface Range: 3916nm@12 knots
Submerged Range: 100nm@5 knots

Ships in Class:
- Europa
- Asia
- Oceania
- Amerika
- Antarctika