I have decided to do a SS report on the Massasuchetts.
Massachusetts Class, USA Battleship laid down 1912
Displacement:
25 975 t light; 28 090 t standard; 29 096 t normal; 29 900 t full load
Dimensions: Length overall / water x beam x draught
651,50 ft / 651,50 ft x 98,00 ft x 29,00 ft (normal load)
198,58 m / 198,58 m x 29,87 m x 8,84 m
Armament:
8 - 16,00" / 406 mm guns (4x2 guns), 2 048,00lbs / 928,96kg shells, 1912 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 6,00" / 152 mm guns in single mounts, 108,00lbs / 48,99kg shells, 1912 Model
Breech loading guns in casemate mounts
on side, all amidships
Weight of broadside 18 112 lbs / 8 215 kg
Shells per gun, main battery: 150
4 - 21,0" / 533,4 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13,0" / 330 mm 444,00 ft / 135,33 m 14,00 ft / 4,27 m
Ends: Unarmoured
Main Belt covers 105 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16,0" / 406 mm 12,0" / 305 mm 6,00" / 152 mm
- Armour deck: 3,00" / 76 mm, Conning tower: 14,00" / 356 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 54 360 shp / 40 553 Kw = 24,00 kts
Range 6 000nm at 10,00 kts
Bunker at max displacement = 1 810 tons
Complement:
1 113 - 1 448
Cost:
£3,114 million / $12,457 million
Distribution of weights at normal displacement:
Armament: 2 264 tons, 7,8 %
Armour: 8 669 tons, 29,8 %
- Belts: 3 473 tons, 11,9 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 2 438 tons, 8,4 %
- Armour Deck: 2 473 tons, 8,5 %
- Conning Tower: 285 tons, 1,0 %
Machinery: 2 167 tons, 7,4 %
Hull, fittings & equipment: 12 825 tons, 44,1 %
Fuel, ammunition & stores: 3 121 tons, 10,7 %
Miscellaneous weights: 50 tons, 0,2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
31 748 lbs / 14 401 Kg = 15,5 x 16,0 " / 406 mm shells or 3,2 torpedoes
Stability (Unstable if below 1.00): 1,05
Metacentric height 5,4 ft / 1,6 m
Roll period: 17,7 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0,93
Seaboat quality (Average = 1.00): 1,37
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,550
Length to Beam Ratio: 6,65 : 1
'Natural speed' for length: 25,52 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -5,00 degrees
Stern overhang: -15,00 ft / -4,57 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27,50 ft / 8,38 m
- Forecastle (20 %): 26,00 ft / 7,92 m
- Mid (50 %): 23,00 ft / 7,01 m (15,00 ft / 4,57 m aft of break)
- Quarterdeck (15 %): 15,00 ft / 4,57 m
- Stern: 15,00 ft / 4,57 m
- Average freeboard: 20,17 ft / 6,15 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 87,0 %
- Above water (accommodation/working, high = better): 147,8 %
Waterplane Area: 44 558 Square feet or 4 140 Square metres
Displacement factor (Displacement / loading): 93 %
Structure weight / hull surface area: 208 lbs/sq ft or 1 016 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,58
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily
And the 1941 version:
Massachusetts Class, USA Battleship laid down 1912 (Engine 1927)
Displacement:
29 356 t light; 31 535 t standard; 32 512 t normal; 33 294 t full load
Dimensions: Length overall / water x beam x draught
661,41 ft / 659,00 ft x 98,00 ft (Bulges 108,26 ft) x 29,00 ft (normal load)
201,60 m / 200,86 m x 29,87 m (Bulges 33,00 m) x 8,84 m
Armament:
8 - 16,00" / 406 mm guns (4x2 guns), 2 048,00lbs / 928,96kg shells, 1912 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
12 - 6,00" / 152 mm guns in single mounts, 108,00lbs / 48,99kg shells, 1912 Model
Breech loading guns in casemate mounts
on side, all amidships
12 - 5,00" / 127 mm guns in single mounts, 62,50lbs / 28,35kg shells, 1912 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
12 - 0,50" / 12,7 mm guns in single mounts, 0,06lbs / 0,03kg shells, 1912 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 18 056 lbs / 8 190 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13,0" / 330 mm 444,00 ft / 135,33 m 14,00 ft / 4,27 m
Ends: Unarmoured
Main Belt covers 104 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 16,0" / 406 mm 12,0" / 305 mm 6,00" / 152 mm
- Armour deck: 5,00" / 127 mm, Conning tower: 14,00" / 356 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 58 729 ihp / 43 812 Kw = 24,00 kts
Range 6 000nm at 10,00 kts
Bunker at max displacement = 1 759 tons
Complement:
1 209 - 1 573
Cost:
£3,395 million / $13,580 million
Distribution of weights at normal displacement:
Armament: 2 257 tons, 6,9 %
Armour: 10 392 tons, 32,0 %
- Belts: 3 477 tons, 10,7 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 2 438 tons, 7,5 %
- Armour Deck: 4 169 tons, 12,8 %
- Conning Tower: 307 tons, 0,9 %
Machinery: 3 368 tons, 10,4 %
Hull, fittings & equipment: 13 289 tons, 40,9 %
Fuel, ammunition & stores: 3 156 tons, 9,7 %
Miscellaneous weights: 50 tons, 0,2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
34 888 lbs / 15 825 Kg = 17,0 x 16,0 " / 406 mm shells or 3,5 torpedoes
Stability (Unstable if below 1.00): 1,14
Metacentric height 6,2 ft / 1,9 m
Roll period: 18,2 seconds
Steadiness - As gun platform (Average = 50 %): 66 %
- Recoil effect (Restricted arc if above 1.00): 0,60
Seaboat quality (Average = 1.00): 1,32
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,550
Length to Beam Ratio: 6,09 : 1
'Natural speed' for length: 25,67 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5,00 degrees
Stern overhang: -15,00 ft / -4,57 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27,50 ft / 8,38 m
- Forecastle (20 %): 26,00 ft / 7,92 m
- Mid (50 %): 23,00 ft / 7,01 m (15,00 ft / 4,57 m aft of break)
- Quarterdeck (15 %): 15,00 ft / 4,57 m
- Stern: 15,00 ft / 4,57 m
- Average freeboard: 20,17 ft / 6,15 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 87,6 %
- Above water (accommodation/working, high = better): 137,6 %
Waterplane Area: 45 071 Square feet or 4 187 Square metres
Displacement factor (Displacement / loading): 92 %
Structure weight / hull surface area: 208 lbs/sq ft or 1 014 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,47
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily
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