Alternative Design
Lund class, Nordmark Baltic Battleship laid down 1930
Displacement:
7,581 t light; 7,933 t standard; 8,640 t normal; 9,206 t full load
Dimensions: Length overall / water x beam x draught
425.36 ft / 420.00 ft x 60.00 ft x 20.00 ft (normal load)
129.65 m / 128.02 m x 18.29 m x 6.10 m
Armament:
6 - 9.45" / 240 mm guns (3x2 guns), 421.80lbs / 191.33kg shells, 1930 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
12 - 4.33" / 110 mm guns (6x2 guns), 40.61lbs / 18.42kg shells, 1930 Model
Dual purpose guns in deck mounts with hoists
on side ends, evenly spread, 2 raised mounts - superfiring
32 - 1.46" / 37.0 mm guns (8x4 guns), 1.55lbs / 0.70kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
20 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 10 raised mounts
Weight of broadside 3,073 lbs / 1,394 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 220.00 ft / 67.06 m 10.00 ft / 3.05 m
Ends: 1.00" / 25 mm 200.00 ft / 60.96 m 10.00 ft / 3.05 m
Main Belt covers 81 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 7.00" / 178 mm 7.00" / 178 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm 1.00" / 25 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -
- Armour deck: 5.00" / 127 mm, Conning tower: 5.00" / 127 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 15,532 shp / 11,587 Kw = 21.00 kts
Range 6,300nm at 15.00 kts
Bunker at max displacement = 1,273 tons
Complement:
447 - 582
Cost:
£2.734 million / $10.937 million
Distribution of weights at normal displacement:
Armament: 384 tons, 4.4 %
Armour: 3,768 tons, 43.6 %
- Belts: 1,274 tons, 14.7 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 672 tons, 7.8 %
- Armour Deck: 1,777 tons, 20.6 %
- Conning Tower: 45 tons, 0.5 %
Machinery: 471 tons, 5.4 %
Hull, fittings & equipment: 2,908 tons, 33.7 %
Fuel, ammunition & stores: 1,059 tons, 12.3 %
Miscellaneous weights: 50 tons, 0.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,975 lbs / 6,793 Kg = 35.5 x 9.4 " / 240 mm shells or 3.0 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 2.7 ft / 0.8 m
Roll period: 15.4 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.12
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.600
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 23.81 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (30 %): 12.00 ft / 3.66 m
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 12.96 ft / 3.95 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 52.6 %
- Above water (accommodation/working, high = better): 98.2 %
Waterplane Area: 19,209 Square feet or 1,785 Square metres
Displacement factor (Displacement / loading): 110 %
Structure weight / hull surface area: 109 lbs/sq ft or 534 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.50
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
2 ships built Lund & Malmö
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Or
Lund class, Nordmark Baltic Battleship laid down 1930
Displacement:
7,572 t light; 7,933 t standard; 8,640 t normal; 9,206 t full load
Dimensions: Length overall / water x beam x draught
425.36 ft / 420.00 ft x 60.00 ft x 20.00 ft (normal load)
129.65 m / 128.02 m x 18.29 m x 6.10 m
Armament:
4 - 11.02" / 280 mm guns (2x2 guns), 669.80lbs / 303.81kg shells, 1930 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
12 - 4.33" / 110 mm guns (6x2 guns), 40.61lbs / 18.42kg shells, 1930 Model
Dual purpose guns in deck mounts with hoists
on side ends, evenly spread, 2 raised mounts - superfiring
32 - 1.46" / 37.0 mm guns (8x4 guns), 1.55lbs / 0.70kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
20 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 10 raised mounts
Weight of broadside 3,221 lbs / 1,461 kg
Shells per gun, main battery: 100
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 12.0" / 305 mm 215.00 ft / 65.53 m 11.00 ft / 3.35 m
Ends: 1.00" / 25 mm 205.00 ft / 62.48 m 11.00 ft / 3.35 m
Main Belt covers 79 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 7.00" / 178 mm 7.00" / 178 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm 1.00" / 25 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -
- Armour deck: 5.00" / 127 mm, Conning tower: 5.00" / 127 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 15,532 shp / 11,587 Kw = 21.00 kts
Range 6,300nm at 15.00 kts
Bunker at max displacement = 1,273 tons
Complement:
447 - 582
Cost:
£2.798 million / $11.192 million
Distribution of weights at normal displacement:
Armament: 403 tons, 4.7 %
Armour: 3,736 tons, 43.2 %
- Belts: 1,381 tons, 16.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 533 tons, 6.2 %
- Armour Deck: 1,777 tons, 20.6 %
- Conning Tower: 45 tons, 0.5 %
Machinery: 471 tons, 5.4 %
Hull, fittings & equipment: 2,913 tons, 33.7 %
Fuel, ammunition & stores: 1,068 tons, 12.4 %
Miscellaneous weights: 50 tons, 0.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,933 lbs / 6,773 Kg = 22.3 x 11.0 " / 280 mm shells or 2.9 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 2.9 ft / 0.9 m
Roll period: 14.7 seconds
Steadiness - As gun platform (Average = 50 %): 57 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.14
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.600
Length to Beam Ratio: 7.00 : 1
'Natural speed' for length: 23.81 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (30 %): 12.00 ft / 3.66 m
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 12.96 ft / 3.95 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 54.2 %
- Above water (accommodation/working, high = better): 98.2 %
Waterplane Area: 19,209 Square feet or 1,785 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 110 lbs/sq ft or 536 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.54
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
2 ships built Lund & Malmö