Ger/CS/1905, Germany CL laid down 1905 (Engine 1908)
Displacement:
2,150 t light; 2,213 t standard; 2,475 t normal; 2,685 t full load
Dimensions: Length overall / water x beam x draught
372.76 ft / 370.00 ft x 38.00 ft x 13.00 ft (normal load)
113.62 m / 112.78 m x 11.58 m x 3.96 m
Armament:
5 - 4.00" / 102 mm guns (3 mounts), 32.00lbs / 14.51kg shells, 1905 Model
Quick firing guns in deck mounts
on centreline ends, majority forward, all raised mounts - superfiring
Weight of broadside 160 lbs / 73 kg
Shells per gun, main battery: 150
2 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.00" / 51 mm 165.00 ft / 50.29 m 16.00 ft / 4.88 m
Ends: Unarmoured
Main Belt covers 69 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 33,411 shp / 24,925 Kw = 30.00 kts
Range 2,500nm at 15.00 kts
Bunker at max displacement = 472 tons
Complement:
175 - 228
Cost:
£0.283 million / $1.131 million
Distribution of weights at normal displacement:
Armament: 20 tons, 0.8 %
Armour: 246 tons, 9.9 %
- Belts: 235 tons, 9.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 11 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,363 tons, 55.0 %
Hull, fittings & equipment: 522 tons, 21.1 %
Fuel, ammunition & stores: 325 tons, 13.1 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
614 lbs / 279 Kg = 19.2 x 4.0 " / 102 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.58
Metacentric height 2.5 ft / 0.8 m
Roll period: 10.0 seconds
Steadiness - As gun platform (Average = 50 %): 88 %
- Recoil effect (Restricted arc if above 1.00): 0.12
Seaboat quality (Average = 1.00): 1.52
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.474
Length to Beam Ratio: 9.74 : 1
'Natural speed' for length: 19.24 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 3.00 degrees
Stern overhang: 1.50 ft / 0.46 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.00 ft / 7.32 m
- Forecastle (20 %): 23.00 ft / 7.01 m
- Mid (33 %): 22.00 ft / 6.71 m (14.00 ft / 4.27 m aft of break)
- Quarterdeck (15 %): 14.00 ft / 4.27 m
- Stern: 15.00 ft / 4.57 m
- Average freeboard: 17.06 ft / 5.20 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 183.9 %
- Above water (accommodation/working, high = better): 141.1 %
Waterplane Area: 9,153 Square feet or 850 Square metres
Displacement factor (Displacement / loading): 65 %
Structure weight / hull surface area: 29 lbs/sq ft or 139 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.44
- Longitudinal: 1.67
- Overall: 0.50
Hull space for machinery, storage, compartmentation is cramped
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
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Wednesday, January 05, 2005
I redid my Ger/CS/1905 design
Given what I learned about Springsharp, I redid my design for the Ger/CS/1905 scout cruiser. By reducing the speed way down to 30 knots, I was able to use my original dimensions and give them the 2in Belt over the machinery spaces. I had thought that I would have to accept 29 knots, but 30 knots is not so bad, given the date of the design. Admittedly, I wanted to have too light a machinery for 1905, although I don't think that what I want is out of line. This is the Springsharp report:
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