Make your own free website on Tripod.com
Fantasy Fleet Page
Belomore Class Port Icebreakers
Home
French Strategic Resources
French Coast Defenses
Russian Coast Defenses
The Fleet of the Republic of France
Port Facilities of the Republic of France
French Atlantic Fleet
French Indian Ocean Flotilla
French Mediterranian Fleet
French Pacific Fleet
French ships under construction
Obsolete French ships
French Ship Designs
French Naval Guns
Russian Federation Port Facilities
Russian Federation Fleet, as of 1/1/1921
Russian Federation Baltic Sea Fleet
Russian Federation Black Sea Fleet
Russian Federation Northern Fleet
Russian Federation Pacific Fleet
Russian Federation Caspian Sea Flotilla
Russian River Flotillas
Russian Federation ships under construction
Obsolete Russian ships
Russian Ship Designs
Russian Naval Guns
Treaty tables

The Belomore Class port icebreakers are designed to extend the usability of the Gulf of Finland, ports on the White Sea, and along the Pacific coast. While capable of being ocean-going, they lack the power and the mass to be able to clear passage through ice much more than a meter thick.

Belomore Class Port Icebreaker, laid down 1917

Length, 85.0 m x Beam, 25.0 m x Depth, 4.5 m
4821 tonnes normal displacement (4572 tonnes standard)

Main battery: 2 x 0.7-cm

Weight of broadside: 0 kg

Main belt, 5.0 cm; bow and stern, 10.0 cm
Torpedo bulkhead, 5.0 cm

Maximum speed for 9870 shaft kw = 20.00 knots
Approximate cruising radius, 6000 nm / 10 knots

Typical complement: 289-376


Estimated cost, $1.633 million (408,000)

Remarks:

Oil firing.

Magazines and engineering spaces are roomy, with superior
watertight subdivision.

Ship is roomy, with superior accommodation and working space.


Distribution of weights:
Percent
normal
displacement:

Armor, total ..................... 539 tonnes = 11 pct

Belt 344 tonnes = 7 pct
Torpedo bulkhead 195 tonnes = 4 pct

Machinery ........................ 485 tonnes = 10 pct
Hull and fittings; equipment ..... 3452 tonnes = 72 pct
Fuel, ammunition, stores ......... 345 tonnes = 7 pct
Miscellaneous weights ............ 0 tonnes = 0 pct
-----
4821 tonnes = 100 pct

Estimated metacentric height, 1.8 m

Displacement summary:

Light ship: 4475 tonnes
Standard displacement: 4572 tonnes
Normal service: 4821 tonnes
Full load: 5000 tonnes

Loading submergence 1347 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.31

Shellfire needed to sink: 7795 kg = 1562354.2 x 0.7-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 5.4
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 55 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 1.10

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.50
Sharpness coefficient: 0.47
Hull speed coefficient 'M' = 5.05
'Natural speed' for length = 16.7 knots
Power going to wave formation
at top speed: 64 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 45 percent

Relative accommodation and working space: 202 percent


Displacement factor: 320 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 1.86
(Structure weight per square
metre of hull surface: 848 kg)

Relative longitudinal hull strength: 9.30
(for 6.50 m average freeboard;
freeboard adjustment +2.51 m)

Relative composite hull strength: 2.18

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

278.80 x 82.00 x 14.76; 21.32 -- Dimensions
0.50 -- Block coefficient
1917 -- Year laid down
20.00 / 6000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
2 x 0.28; 0 -- Main battery; turrets
Central positioning of guns
:
0 -- No secondary battery
0 -- No tertiary (QF/AA) battery
0 -- No fourth (light) battery
0 -- No torpedo armament
++++++++++
1.97 / 3.94 / 0.00 / 1.97; 100 -- Belt armor; relative extent
0.00 / 0.00 -- Deck / CT
0.00 -- No battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++


Enter supporting content here