The Weimar class has been designed by Deschimag of Hamburg to meet the requirements of firms engaged in the transport of ore, coal or other bulk cargo. The bridge structure is placed aft, leaving the deck unobstructed for carriage of cargo, and provision is made for extensive cargo-handing equipment to facilitate a quick unloading and turn-around in port.
Weimar, German Bulk Carrier laid down 1942
Displacement: 3,275 t light; 3,470 t standard; 9,783 t normal; 14,834 t full load
Dimensions: Length overall / water x beam x draught
413.19 ft / 405.51 ft x 53.15 ft x 24.44 ft (normal load) [125.94 m / 123.60 m x 16.20 m x 7.45 m]
Machinery:
Diesel Internal combustion motors, Geared drive, 1 shaft, 4,296 shp / 3,204 Kw = 14.00 kts
Range 120,000nm at 11.00 kts
Bunker at max displacement = 11,364 tons
Complement: 491 - 639
Cost: £0.829 million / $3.317 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 112 tons, 1.1 %
Hull, fittings & equipment: 2,362 tons, 24.1 %
Fuel, ammunition & stores: 6,509 tons, 66.5 %
Miscellaneous weights: 800 tons, 8.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 7,813 lbs / 3,544 kg = 72.35 x 6in/152mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.55
Metacentric height 4.1 ft / 1.2 m
Roll period: 11.1 seconds
Steadiness - As gun platform (Average = 50 %): 78 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.650
Length to Beam Ratio: 7.63: 1
'Natural speed' for length: 20.14 kts
Power going to wave formation at top speed: 32 %
Trim (Max stability = 0, Max steadiness = 100): 39
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: -1.64 ft / -0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.62 ft / 7.20 m
- Forecastle (10 %): 22.97 ft / 7.00 m (18.04 ft / 5.50 m aft of break)
- Mid (30 %): 18.04 ft / 5.50 m
- Quarterdeck (30 %): 18.04 ft / 5.50 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 18.56 ft / 5.66 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 14.5 %
- Above water (accommodation/working, high = better): 114.0 %
Waterplane Area: 16,279 Square feet or 1,512 Square metres
Displacement factor (Displacement / loading): 955 %
Structure weight / hull surface area: 84 lbs/sq ft or 411 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.06
- Longitudinal: 2.40
- Overall: 1.15
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily
Low-stowed cargo simmed as additional bunkers. Normal radius 13,000 nm at 11 knots, with bunkers of 1,310 tons. Total low-stowed cargo 10,000 tons.
Residual composite strength represents strengthened deck combings and structure for carriage of heavy cargos.
Breakdown of miscellaneous weight:
Cargo handling gear 300 tons
Anticipated deck cargo 500 tons
Crew and survivability ratings reduced for commercial service