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Betelgeuse Class Oiler
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Government of Russian Federation, in view of the superior handling and propulsive qualities of oil, and the availability of oil at Baku, has converted most ships to oil-firing.  This requires support vessels capable of carrying oil accompaning the Fleet

Betelgeuse Class Oiler, laid down 1919

Length, 130.0 m x Beam, 20.0 m x Depth, 8.0 m
11534 tonnes normal displacement (9897 tonnes standard)

Main battery: 2 x 1.3-cm

Weight of broadside: 0 kg

Main belt, 0.3 cm; ends unarmored
Torpedo bulkhead, 10.0 cm

Cargo capacity - 5,500 tons. 6,500 GRT

Maximum speed for 12924 shaft kw = 20.00 knots
Approximate cruising radius, 10000 nm / 15 knots

Typical complement: 112-144


Estimated cost, $3.704 million (926,000)

Remarks:

Oil firing.

Relative extent of belt armor, 110 percent of 'typical' coverage.


Distribution of weights:
Percent
normal
displacement:

Armor, total ..................... 1075 tonnes = 9 pct

Belt 15 tonnes = 0 pct
Torpedo bulkhead 1059 tonnes = 9 pct

Machinery ........................ 615 tonnes = 5 pct
Hull and fittings; equipment ..... 2477 tonnes = 21 pct
Fuel, ammunition, stores ......... 1867 tonnes = 16 pct
Miscellaneous weights ............ 5500 tonnes = 48 pct
-----
11534 tonnes = 100 pct

Estimated metacentric height, 0.8 m

Displacement summary:

Light ship: 9667 tonnes
Standard displacement: 9897 tonnes
Normal service: 11534 tonnes
Full load: 12797 tonnes

Loading submergence 1756 tonnes/metre

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Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.01

Shellfire needed to sink: 4195 kg = 137638.6 x 1.3-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 1.9
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 39 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 1.04

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


Hull form characteristics:

Block coefficient: 0.55
Sharpness coefficient: 0.40
Hull speed coefficient 'M' = 5.77
'Natural speed' for length = 20.6 knots
Power going to wave formation
at top speed: 48 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 101 percent

Relative accommodation and working space: 84 percent


Displacement factor: 148 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 1.00
(Structure weight per square
metre of hull surface: 423 kg)

Relative longitudinal hull strength: 1.56
(for 4.00 m average freeboard;
freeboard adjustment -0.75 m)

Relative composite hull strength: 1.05

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

426.40 x 65.60 x 26.24; 13.12 -- Dimensions
0.55 -- Block coefficient
1919 -- Year laid down
20.00 / 10000 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
5500 tons -- Miscellaneous weights
++++++++++
2 x 0.51; 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
++++++++++
0.12 / 0.00 / 0.00 / 3.94; 110 -- 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)


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