WesWorld

Ledus Class
- Ledus
- Hokejs
- Apledojums

The Ledus class of icebreakers are the principal units of the Latvian Coast Guard. Typical icebreakers, they exist to clear paths into the ocean in the winter, and assist fishermen in the summer.

(Thank you, Brock, for the sim)

Ledus, Latvia Icebreaker laid down 1930

Displacement:
808 t light; 830 t standard; 1,110 t normal; 1,334 t full load

Dimensions: Length overall / water x beam x draught
167.51 ft / 164.04 ft x 36.09 ft x 13.12 ft (normal load)
51.06 m / 50.00 m x 11.00 m x 4.00 m

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Ends: Unarmoured

- Torpedo Bulkhead:
1.97" / 50 mm 106.63 ft / 32.50 m 11.55 ft / 3.52 m

Machinery:
Oil fired boilers, complex reciprocating steam engines,
Geared drive, 2 shafts, 1,451 ihp / 1,082 Kw = 14.00 kts
Range 6,000nm at 14.00 kts
Bunker at max displacement = 503 tons

Complement:
95 - 124

Cost:
£0.167 million / $0.666 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Armour: 90 tons, 8.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 90 tons, 8.1 %
- Armament: 0 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 82 tons, 7.4 %
Hull, fittings & equipment: 486 tons, 43.8 %
Fuel, ammunition & stores: 302 tons, 27.2 %
Miscellaneous weights: 150 tons, 13.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,471 lbs / 1,574 Kg = 32.1 x 6 " / 152 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 1.3 ft / 0.4 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.500
Length to Beam Ratio: 4.55 : 1
'Natural speed' for length: 12.81 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.69 ft / 6.00 m
- Forecastle (20 %): 18.04 ft / 5.50 m
- Mid (50 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 14.07 ft / 4.29 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.2 %
- Above water (accommodation/working, high = better): 107.8 %
Waterplane Area: 3,944 Square feet or 366 Square metres
Displacement factor (Displacement / loading): 274 %
Structure weight / hull surface area: 68 lbs/sq ft or 333 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.30
- Longitudinal: 12.11
- Overall: 1.62
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily

150 tons for deicing equipment, rocking tanks, heating equipment