Ersatz Roon, LT-Verse Armored Cruiser laid down 1915
Displacement:
10,542 t light; 11,083 t standard; 12,400 t normal; 13,454 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(531.50 ft / 531.50 ft) x 65.62 ft x (24.61 / 26.19 ft)
(162.00 m / 162.00 m) x 20.00 m x (7.50 / 7.98 m)
Armament:
8 - 8.27" / 210 mm 45.0 cal guns - 284.98lbs / 129.26kg shells, 150 per gun
Breech loading guns in turret on barbette mounts, 1915 Model
4 x Twin mounts on centreline ends, evenly spread
2 raised mounts - superfiring
16 - 4.13" / 105 mm 45.0 cal guns - 35.62lbs / 16.16kg shells, 300 per gun
Breech loading guns in deck and hoist mounts, 1915 Model
16 x Single mounts on sides, evenly spread
6 raised mounts
Weight of broadside 2,850 lbs / 1,293 kg
6 - 19.7" / 500 mm, 22.97 ft / 7.00 m torpedoes - 1.294 t each, 7.761 t total
In 2 sets of deck mounted side rotating tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.72" / 120 mm 360.89 ft / 110.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Main Belt covers 104 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7.09" / 180 mm 4.72" / 120 mm 5.91" / 150 mm
2nd: 1.97" / 50 mm 0.39" / 10 mm 0.79" / 20 mm
- Armoured deck - multiple decks: 1.97" / 50 mm For and Aft decks
Forecastle: 0.98" / 25 mm Quarter deck: 0.98" / 25 mm
- Conning towers: Forward 5.91" / 150 mm, Aft 0.00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 80,257 shp / 59,871 Kw = 30.00 kts
Range 8,000nm at 14.00 kts
Bunker at max displacement = 2,371 tons
Complement:
586 - 763
Cost:
£1.547 million / $6.186 million
Distribution of weights at normal displacement:
Armament: 675 tons, 5.4 %
- Guns: 667 tons, 5.4 %
- Torpedoes: 8 tons, 0.1 %
Armour: 2,498 tons, 20.1 %
- Belts: 931 tons, 7.5 %
- Armament: 721 tons, 5.8 %
- Armour Deck: 778 tons, 6.3 %
- Conning Tower: 68 tons, 0.5 %
Machinery: 3,040 tons, 24.5 %
Hull, fittings & equipment: 4,209 tons, 33.9 %
Fuel, ammunition & stores: 1,858 tons, 15.0 %
Miscellaneous weights: 120 tons, 1.0 %
- Hull below water: 50 tons
- On freeboard deck: 20 tons
- Above deck: 50 tons
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
13,384 lbs / 6,071 Kg = 47.4 x 8.3 " / 210 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 3.2 ft / 1.0 m
Roll period: 15.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.59
Seaboat quality (Average = 1.00): 1.00
Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.506 / 0.516
Length to Beam Ratio: 8.10 : 1
'Natural speed' for length: 23.05 kts
Power going to wave formation at top speed: 59 %
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 (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 25.20 ft / 7.68 m, 24.61 ft / 7.50 m
- Forward deck: 30.00 %, 24.61 ft / 7.50 m, 24.61 ft / 7.50 m
- Aft deck: 35.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Quarter deck: 15.00 %, 16.40 ft / 5.00 m, 16.40 ft / 5.00 m
- Average freeboard: 20.55 ft / 6.26 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 100.8 %
- Above water (accommodation/working, high = better): 149.9 %
Waterplane Area: 23,359 Square feet or 2,170 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 120 lbs/sq ft or 586 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.83
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
