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Fantasy Fleet Page
Neptune Class Collier
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These ships supply the fleet bases with the coal required to sustain fleet operations.

Neptune Class French Collier, laid down 1912

Length, 160.0 m x Beam, 22.0 m x Depth, 6.0 m
12776 tonnes normal displacement (11486 tonnes standard)

Main battery: 2 x 0.8-cm

Weight of broadside: 0 kg

7600 tons cargo, 8882 GRT

Hull unarmored

Maximum speed for 5958 shaft kw = 16.00 knots
Approximate cruising radius, 10000 nm / 10 knots

Typical complement: 120-156


Estimated cost, $1.768 million (442,000)

Remarks:

Excellent seaboat; comfortable and able to fight her guns
in the heaviest weather.

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:

Machinery ........................ 350 tonnes = 3 pct
Hull and fittings; equipment ..... 3281 tonnes = 26 pct
Fuel, ammunition, stores ......... 1545 tonnes = 12 pct
Miscellaneous weights ............ 7600 tonnes = 59 pct
-----
12776 tonnes = 100 pct

Estimated metacentric height, 1.0 m

Displacement summary:

Light ship: 11231 tonnes
Standard displacement: 11486 tonnes
Normal service: 12776 tonnes
Full load: 13757 tonnes

Loading submergence 2520 tonnes/metre

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


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.05

Shellfire needed to sink: 7951 kg = 1305982.7 x 0.8-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 2.5
(Approximates number of 'typical'
torpedo hits needed to sink ship)

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

Relative rocking effect from firing to beam, 0.00

Relative quality as a seaboat: 1.56

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


Hull form characteristics:

Block coefficient: 0.60
Sharpness coefficient: 0.40
Hull speed coefficient 'M' = 6.87
'Natural speed' for length = 22.9 knots
Power going to wave formation
at top speed: 30 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 74 percent

Relative accommodation and working space: 140 percent


Displacement factor: 154 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 1.02
(Structure weight per square
metre of hull surface: 427 kg)

Relative longitudinal hull strength: 1.03
(for 5.00 m average freeboard;
freeboard adjustment +0.15 m)

Relative composite hull strength: 1.02

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


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

524.80 x 72.16 x 19.68; 16.40 -- Dimensions
0.60 -- Block coefficient
1912 -- Year laid down
16.00 / 10000 / 10.00; Turbine, coal fired -- Speed / radius / cruise
7600 tons -- Miscellaneous weights
++++++++++
2 x 0.30; 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
++++++++++
0.00 -- No belt armor
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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