Study 8 "Short Hull" is finish
Here is the SpringSharp
Study 8, germany Coastal Battleship laid down 1929
Displacement:
11 281 t light; 11 890 t standard; 12 010 t normal; 12 105 t full load
Dimensions: Length overall / water x beam x draught
452.76 ft / 446.19 ft x 76.12 ft (Bulges 77.43 ft) x 22.37 ft (normal load)
138.00 m / 136.00 m x 23.20 m (Bulges 23.60 m) x 6.82 m
Armament:
9 - 11.02" / 280 mm guns (3x3 guns), 669.80lbs / 303.82kg shells, 1929 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority aft, 1 raised mount aft - superfiring
8 - 3.46" / 88.0 mm guns (4x2 guns), 20.79lbs / 9.43kg shells, 1929 Model
Quick firing guns in deck mounts
on side, evenly spread
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1929 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 2 raised mounts
8 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1929 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 6 209 lbs / 2 816 kg
Shells per gun, main battery: 106
8 - 21.0" / 533 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 11.0" / 280 mm 255.91 ft / 78.00 m 8.60 ft / 2.62 m
Ends: 1.57" / 40 mm 147.64 ft / 45.00 m 8.01 ft / 2.44 m
42.65 ft / 13.00 m Unarmoured ends
Main Belt covers 88 % of normal length
- Torpedo Bulkhead and Bulges:
1.57" / 40 mm 255.91 ft / 78.00 m 22.24 ft / 6.78 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 11.0" / 280 mm 5.91" / 150 mm 11.0" / 280 mm
2nd: 0.79" / 20 mm - -
- Armour deck: 4.72" / 120 mm, Conning tower: 11.02" / 280 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 19 000 shp / 14 174 Kw = 20.34 kts
Range 500nm at 14.00 kts
Bunker at max displacement = 215 tons
Complement:
573 - 745
Cost:
£4.514 million / $18.055 million
Distribution of weights at normal displacement:
Armament: 776 tons, 6.5 %
Armour: 4 908 tons, 40.9 %
- Belts: 1 170 tons, 9.7 %
- Torpedo bulkhead: 332 tons, 2.8 %
- Armament: 1 222 tons, 10.2 %
- Armour Deck: 2 060 tons, 17.2 %
- Conning Tower: 125 tons, 1.0 %
Machinery: 584 tons, 4.9 %
Hull, fittings & equipment: 4 998 tons, 41.6 %
Fuel, ammunition & stores: 729 tons, 6.1 %
Miscellaneous weights: 15 tons, 0.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
17 391 lbs / 7 889 Kg = 26.0 x 11.0 " / 280 mm shells or 3.9 torpedoes
Stability (Unstable if below 1.00): 1.03
Metacentric height 3.5 ft / 1.1 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.69
Seaboat quality (Average = 1.00): 1.32
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.544
Length to Beam Ratio: 5.76 : 1
'Natural speed' for length: 21.12 kts
Power going to wave formation at top speed: 48 %
Trim (Max stability = 0, Max steadiness = 100): 53
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 4.33 ft / 1.32 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.59 ft / 7.80 m
- Forecastle (20 %): 20.83 ft / 6.35 m
- Mid (50 %): 19.00 ft / 5.79 m (10.99 ft / 3.35 m aft of break)
- Quarterdeck (19 %): 10.99 ft / 3.35 m
- Stern: 10.99 ft / 3.35 m
- Average freeboard: 16.02 ft / 4.88 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.2 %
- Above water (accommodation/working, high = better): 101.0 %
Waterplane Area: 23 569 Square feet or 2 190 Square metres
Displacement factor (Displacement / loading): 98 %
Structure weight / hull surface area: 152 lbs/sq ft or 742 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 1.92
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
the photos
Jef
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