Ger/CL/1921 Fast A1, Germany Light Cruiser laid down 1921
Displacement:
6,660 t light; 6,909 t standard; 7,331 t normal; 7,669 t full load
Dimensions: Length overall / water x beam x draught
555.00 ft / 555.00 ft x 55.00 ft x 18.00 ft (normal load)
169.16 m / 169.16 m x 16.76 m x 5.49 m
Armament:
8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1921 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, all raised mounts - superfiring
4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1921 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 992 lbs / 450 kg
Shells per gun, main battery: 180
4 - 23.6" / 599.44 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.00" / 25 mm 120.00 ft / 36.58 m 8.00 ft / 2.44 m
Ends: Unarmoured
Main Belt covers 33 % 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 0.50" / 13 mm 0.50" / 13 mm
2nd: 1.00" / 25 mm - -
- Armour deck: 0.50" / 13 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 86,889 shp / 64,819 Kw = 35.00 kts
Range 3,600nm at 15.00 kts
Bunker at max displacement = 759 tons
Complement:
395 - 514
Cost:
£1.925 million / $7.699 million
Distribution of weights at normal displacement:
Armament: 124 tons, 1.7 %
Armour: 302 tons, 4.1 %
- Belts: 51 tons, 0.7 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 62 tons, 0.8 %
- Armour Deck: 190 tons, 2.6 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 2,992 tons, 40.8 %
Hull, fittings & equipment: 3,242 tons, 44.2 %
Fuel, ammunition & stores: 671 tons, 9.2 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,070 lbs / 2,300 Kg = 46.9 x 6.0 " / 152 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 3.1 ft / 1.0 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.39
Seaboat quality (Average = 1.00): 1.13
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.467
Length to Beam Ratio: 10.09 : 1
'Natural speed' for length: 26.97 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.00 ft / 8.23 m
- Forecastle (20 %): 26.00 ft / 7.92 m
- Mid (37 %): 26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
- Quarterdeck (15 %): 18.00 ft / 5.49 m
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 21.04 ft / 6.41 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 145.4 %
- Above water (accommodation/working, high = better): 176.2 %
Waterplane Area: 20,524 Square feet or 1,907 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 92 lbs/sq ft or 451 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 1.96
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Saturday, January 15, 2005
I had to accept less speed for my fast German light cruiser Ger/CL/1921
I just tried the Ger/CL/1921 very fast light cruiser. I had to accept a speed of 35 knots, but for that I got a good ship. The design has always been almost unprotected. There are just a few patched os 1/2in or 1in armor. The ship is trying to be like an Italian light cruiser from the 1920's or early 1930's, and is like a large destroyer, but better armed and with more seakeeping ability. I am started to insist on good seakeeping ability in what I do, despite the cost.
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