Clipper a écrit:
""Je trouve celui que tu appelles le Derfflinger intéressant. Tu as fait une étude springsharp avant ? "
La plupart des études que j'ai réalisées en 1980 ont été traitées récement avec SpringSharp.
Des corrections ont évidement été effectuées.
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Study 2, Germany Panzerschiff laid down 1929
Displacement:
11 247 t light; 11 890 t standard; 14 071 t normal; 15 816 t full load
Dimensions: Length overall / water x beam x draught
583.98 ft / 577.43 ft x 70.87 ft (Bulges 72.18 ft) x 23.35 ft (normal load)
178.00 m / 176.00 m x 21.60 m (Bulges 22.00 m) x 7.12 m
Armament:
8 - 11.02" / 280 mm guns (4x2 guns), 669.80lbs / 303.82kg shells, 1929 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 4.13" / 105 mm guns (6x2 guns), 35.32lbs / 16.02kg shells, 1929 Model
Anti-aircraft 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, all raised mounts
16 - 0.79" / 20.0 mm guns (8x2 guns), 0.24lbs / 0.11kg shells, 1929 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 2 raised mounts
Weight of broadside 5 798 lbs / 2 630 kg
Shells per gun, main battery: 110
8 - 21.0" / 533 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.35" / 85 mm 410.76 ft / 125.20 m 8.86 ft / 2.70 m
Ends: 1.57" / 40 mm 98.43 ft / 30.00 m 7.87 ft / 2.40 m
68.24 ft / 20.80 m Unarmoured ends
Main Belt covers 109 % of normal length
- Torpedo Bulkhead and Bulges:
1.57" / 40 mm 410.76 ft / 125.20 m 23.23 ft / 7.08 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.51" / 140 mm 2.76" / 70 mm 4.92" / 125 mm
2nd: 0.79" / 20 mm - -
3rd: 0.39" / 10 mm - -
4th: 0.39" / 10 mm - -
- Armour deck: 2.24" / 57 mm, Conning tower: 5.51" / 140 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 55 054 shp / 41 070 Kw = 27.00 kts
Range 14 000nm at 15.00 kts
Bunker at max displacement = 3 926 tons
Complement:
645 - 839
Cost:
£4.957 million / $19.827 million
Distribution of weights at normal displacement:
Armament: 725 tons, 5.2 %
Armour: 3 036 tons, 21.6 %
- Belts: 553 tons, 3.9 %
- Torpedo bulkhead: 556 tons, 4.0 %
- Armament: 720 tons, 5.1 %
- Armour Deck: 1 138 tons, 8.1 %
- Conning Tower: 69 tons, 0.5 %
Machinery: 1 691 tons, 12.0 %
Hull, fittings & equipment: 5 775 tons, 41.0 %
Fuel, ammunition & stores: 2 824 tons, 20.1 %
Miscellaneous weights: 20 tons, 0.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
18 335 lbs / 8 316 Kg = 27.4 x 11.0 " / 280 mm shells or 3.3 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 3.5 ft / 1.1 m
Roll period: 16.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.83
Seaboat quality (Average = 1.00): 1.16
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.506
Length to Beam Ratio: 8.00 : 1
'Natural speed' for length: 24.03 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 4.20 ft / 1.28 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.90 ft / 8.20 m
- Forecastle (19 %): 23.62 ft / 7.20 m
- Mid (48 %): 21.13 ft / 6.44 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (18 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 18.05 ft / 5.50 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 109.3 %
- Above water (accommodation/working, high = better): 121.8 %
Waterplane Area: 27 414 Square feet or 2 547 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 140 lbs/sq ft or 685 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.39
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Jef