Yam Class Fast Transport
Laid down 1935
Length, 92.5 m x Beam, 9.9 m x Depth, 3.4 m
1412 tonnes normal displacement (1244 tonnes standard)
Main battery: 1 x 12.5-cm
Secondary battery: 4 x 3.5-cm
AA battery: 8 x 1.5-cm
Weight of broadside: 30 kg
Hull unarmored
Battery armor:
Main, 3.0 cm shields / secondary, 2.0 cm shields
AA, 2.0 cm shields
Maximum speed for 8003 shaft kw = 24.28 knots
Approximate cruising radius, 7300 nm / 12 knots
Typical complement: 115-150
Estimated cost, $1.815 million (£454,000)
Remarks:
Excellent seaboat; comfortable and able to fight her guns
in the heaviest weather.
Ship is roomy, with superior accommodation and working space.
Miscellaneous weight is:
-80 t: 4 x 10 t LCI, and davits for them
-240 t: Berthing for 120 troops
-30 t: Weight reserve and/or deck cargo
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 8 tonnes = 1 pct
Armor, total ..................... 4 tonnes = 0 pct
Armament 4 tonnes = 0 pct
Machinery ........................ 309 tonnes = 22 pct
Hull and fittings; equipment ..... 540 tonnes = 38 pct
Fuel, ammunition, stores ......... 202 tonnes = 14 pct
Miscellaneous weights ............ 350 tonnes = 25 pct
-----
1412 tonnes = 100 pct
Estimated metacentric height, 0.3 m
Displacement summary:
Light ship: 1210 tonnes
Standard displacement: 1244 tonnes
Normal service: 1412 tonnes
Full load: 1541 tonnes
Loading submergence 541 tonnes/metre
+++++++++++++++++++++++++
Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 827 kg = 30.6 x 12.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)
Torpedoes needed to sink: 0.7
(Approximates number of 'typical'
torpedo hits needed to sink ship)
Relative steadiness as gun platform, 67 percent
(50 percent is 'average')
Relative rocking effect from firing to beam, 0.08
Relative quality as a seaboat: 1.69
+++++++++++++++++++++++++
Hull form characteristics:
Block coefficient: 0.45
Sharpness coefficient: 0.32
Hull speed coefficient 'M' = 8.26
'Natural speed' for length = 17.4 knots
Power going to wave formation
at top speed: 57 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by
magazines and engineering spaces: 103 percent
Relative accommodation and working space: 135 percent
Displacement factor: 136 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.92
(Structure weight per square
metre of hull surface: 242 kg)
Relative longitudinal hull strength: 2.22
(for 4.30 m average freeboard;
freeboard adjustment +1.18 m)
Relative composite hull strength: 1.00
(as Simmed by perdedor99 )
Class: Yam and Yimak
This post has been edited 1 times, last edit by "Vukovlad" (Aug 15th 2008, 3:21pm)