Rhon, German Support Tanker laid down 1940 (Converted 1944)
Displacement: 4,529 t light; 4,930 t standard; 19,373 t normal; 30,927 t full load
Dimensions: Length overall / water x beam x draught
536.41 ft / 524.93 ft x 65.62 ft x 26.25 ft (normal load) [163.50 m / 160.00 m x 20.00 m x 8.00 m]
Armament:
2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1940 Model Anti-aircraft guns in deck mounts on centreline ends, evenly spread, all raised mounts
4 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, all aft, all raised mounts - superfiring
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 78 lbs / 35 kg
Shells per gun, main battery: 300
Armour:
Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -
Machinery:
Diesel Internal combustion motors, Geared drive, 1 shaft, 3,840 shp / 2,864 Kw = 12.00 kts
Range 145,000nm at 12.00 kts
Bunker at max displacement = 25,997 tons
Complement: 820 - 1,067
Cost: £1.086 million / $4.345 million
Distribution of weights at normal displacement:
Armament: 10 tons, 0.1 %
Armour: 5 tons, 0.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 103 tons, 0.5 %
Hull, fittings & equipment: 3,961 tons, 20.4 %
Fuel, ammunition & stores: 14,844 tons, 76.6 %
Miscellaneous weights: 450 tons, 2.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 379,538 lbs / 172,156 Kg = 10,745.3 x 4.1 " / 105 mm shells or 54.7 torpedoes
Stability (Unstable if below 1.00): 2.00
Metacentric height 8.0 ft / 2.4 m
Roll period: 9.8 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.750
Length to Beam Ratio: 8.00: 1
'Natural speed' for length: 22.91 kts
Power going to wave formation at top speed: 21 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.61 ft / 7.50 m
- Forecastle (20 %): 20.34 ft / 6.20 m
- Mid (50 %): 20.34 ft / 6.20 m
- Quarterdeck (15 %): 20.34 ft / 6.20 m
- Stern: 20.34 ft / 6.20 m
- Average freeboard: 20.68 ft / 6.30 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 6.7 %
- Above water (accommodation/working, high = better): 136.3 %
Waterplane Area: 28,851 Square feet or 2,680 Square metres
Displacement factor (Displacement / loading): 1,000 %
Structure weight / hull surface area: 89 lbs/sq ft or 434 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.39
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Breakdown of miscellaneous weight:
Strengthened handling gear, booms, pumps for refueling at sea: 300 tons
Storerooms for dry provisions and supplies: 150 tons
True bunkers 1,284 tons for radius of 12,000 nm at 12 knots; remainder of bunkers used to sim POL as cargo: 13,159 tons
Cost of conversion: 1,136 tons; time for conversion 102 days
Rhön - Conversion commenced 1 January 1944; Conversion complete 12 April 1944
Spessart - Conversion commenced 1 January 1944; Conversion complete 12 April 1944
Eider - Conversion commenced 1 July 1944; Conversion complete 11 October 1944
Trave - Conversion commenced 1 July 1944; Conversion complete 11 October 1944
This post has been edited 2 times, last edit by "BruceDuncan" (Nov 1st 2013, 7:53pm)