In 1944 Deschimag drew up the following scheme for a battlecruiser in response to inquiries from Peru. A presentation was made to the Peruvian Admiralty but no response was received and, of course, no orders placed.
TBD, TBD Battlecruiser laid down 1944
Displacement: 26,540 t light; 27,884 t standard; 30,769 t normal; 33,077 t full load
Dimensions: Length overall / water x beam x draught
802.65 ft / 784.12 ft x 95.14 ft x 26.25 ft (normal load) [244.65 m / 239.00 m x 29.00 m x 8.00 m]
Armament:
9 - 12.01" / 305 mm guns (3 mounts), 865.70lbs / 392.67kg shells, 1944 Model Breech loading guns in turrets (on barbettes) on centreline ends, majority forward, 1 raised mount - superfiring
2 - 4.72" / 120 mm guns (1x2 guns), 52.72lbs / 23.91kg shells, 1944 Model Dual purpose guns in a deck mount with hoist on centreline aft, all raised guns - superfiring
12 - 4.72" / 120 mm guns (6x2 guns), 52.72lbs / 23.91kg shells, 1944 Model Dual purpose guns in deck mounts with hoists on side, evenly spread
16 - 1.57" / 40.0 mm guns (8x2 guns), 1.95lbs / 0.88kg shells, 1944 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 8,561 lbs / 3,883 kg
Shells per gun, main battery: 150
Armour:
Belts: Width (max) Length (avg) Height (avg)
Main: 9.06" / 230 mm 426.51 ft / 130.00 m 11.48 ft / 3.50 m
Ends: Unarmoured
Main Belt covers 84 % of normal length
Torpedo Bulkhead: 1.97" / 50 mm 426.51 ft / 130.00 m 16.40 ft / 5.00 m
Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 13.8" / 350 mm 7.87" / 200 mm 7.87" / 200 mm
2nd: 0.98" / 25 mm 0.98" / 25 mm 0.98" / 25 mm
3rd: 0.98" / 25 mm 0.98" / 25 mm 0.98" / 25 mm
4th: 0.59" / 15 mm 0.39" / 10 mm -
Armour deck: 5.91" / 150 mm, Conning tower: 11.81" / 300 mm
Machinery:
Oil fired boilers, steam turbines, Geared drive, 4 shafts, 108,558 shp / 80,985 Kw = 30.00 kts
Range 9,000nm at 18.00 kts
Bunker at max displacement = 5,193 tons
Complement: 1,161 - 1,510
Cost: £14.907 million / $59.628 million
Distribution of weights at normal displacement:
Armament: 1,070 tons, 3.5 %
Armour: 10,322 tons, 33.5 %
- Belts: 1,949 tons, 6.3 %
- Torpedo bulkhead: 510 tons, 1.7 %
- Armament: 1,692 tons, 5.5 %
- Armour Deck: 5,922 tons, 19.2 %
- Conning Tower: 250 tons, 0.8 %
Machinery: 2,772 tons, 9.0 %
Hull, fittings & equipment: 12,177 tons, 39.6 %
Fuel, ammunition & stores: 4,229 tons, 13.7 %
Miscellaneous weights: 200 tons, 0.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship): 60,380 lbs / 27,388 Kg = 69.7 x 12.0 " / 305 mm shells or 9.4 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 6.0 ft / 1.8 m
Roll period: 16.3 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 1.34
Hull form characteristics:
Hull has a flush deck and transom stern
Block coefficient: 0.550
Length to Beam Ratio: 8.24: 1
'Natural speed' for length: 32.27 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): 22.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 37.73 ft / 11.50 m
- Forecastle (22 %): 26.25 ft / 8.00 m
- Mid (40 %): 21.33 ft / 6.50 m
- Quarterdeck (22 %): 21.33 ft / 6.50 m
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 23.86 ft / 7.27 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 73.1 %
- Above water (accommodation/working, high = better): 196.7 %
Waterplane Area: 54,204 Square feet or 5,036 Square metres
Displacement factor (Displacement / loading): 125 %
Structure weight / hull surface area: 163 lbs/sq ft or 794 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.20
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily