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- USS Michigan, USN Ohio-class Battleship laid down 1945
- Displacement:
- 71,339 t light; 76,230 t standard; 80,397 t normal; 83,731 t full load
- Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
- (954.02 ft / 925.00 ft) x 130.00 ft x (36.00 / 37.27 ft)
- (290.78 m / 281.94 m) x 39.62 m x (10.97 / 11.36 m)
- Armament:
- 9 - 18.00" / 457 mm 48.0 cal guns - 3,850.00lbs / 1,746.33kg shells, 130 per gun
- Breech loading guns in turret on barbette mounts, 1945 Model
- 2 x 3-gun mounts on centreline, forward deck forward
- 1 raised mount - superfiring
- 1 x 3-gun mount on centreline, aft deck aft
- 20 - 5.00" / 127 mm 54.0 cal guns - 70.00lbs / 31.75kg shells, 500 per gun
- Dual purpose guns in deck and hoist mounts, 1945 Model
- 6 x Twin mounts on sides, forward deck aft
- 2 raised mounts - superfiring
- 4 x Twin mounts on sides, aft deck forward
- 2 raised mounts - superfiring
- 28 - 3.00" / 76.2 mm 50.0 cal guns - 13.01lbs / 5.90kg shells, 1,500 per gun
- Dual purpose guns in deck and hoist mounts, 1945 Model
- 12 x Twin mounts on sides, evenly spread
- 6 raised mounts
- 2 x Twin mounts on centreline ends, evenly spread
- 2 double raised mounts
- 40 - 1.57" / 40.0 mm 56.3 cal guns - 1.98lbs / 0.90kg shells, 2,000 per gun
- Anti-air guns in deck mounts, 1945 Model
- 6 x Quad mounts on sides, forward evenly spread
- 2 raised mounts
- 4 x Quad mounts on sides, aft evenly spread
- 2 raised mounts
- Weight of broadside 36,493 lbs / 16,553 kg
- Armour:
- - Belts: Width (max) Length (avg) Height (avg)
- Main: 16.1" / 409 mm 391.28 ft / 119.26 m 13.68 ft / 4.17 m
- Ends: 0.25" / 6 mm 533.71 ft / 162.67 m 13.68 ft / 4.17 m
- Upper: 0.25" / 6 mm 391.28 ft / 119.26 m 8.00 ft / 2.44 m
- Main Belt covers 65 % of normal length
- Main Belt inclined -15.00 degrees (positive = in)
- - Torpedo Bulkhead - Additional damage containing bulkheads:
- 11.0" / 279 mm 391.28 ft / 119.26 m 34.56 ft / 10.53 m
- Beam between torpedo bulkheads 118.00 ft / 35.97 m
- - Hull void:
- 0.00" / 0 mm 0.00 ft / 0.00 m 0.00 ft / 0.00 m
- - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
- Main: 22.5" / 572 mm 9.58" / 243 mm 21.3" / 541 mm
- 2nd: 4.00" / 102 mm 1.50" / 38 mm 4.00" / 102 mm
- - Armoured deck - multiple decks:
- For and Aft decks: 8.00" / 203 mm
- Forecastle: 0.25" / 6 mm Quarter deck: 0.25" / 6 mm
- - Conning towers: Forward 16.00" / 406 mm, Aft 7.00" / 178 mm
- Machinery:
- Oil fired boilers, steam turbines,
- Geared drive, 4 shafts, 225,025 shp / 167,868 Kw = 30.07 kts
- Range 10,000nm at 15.00 kts
- Bunker at max displacement = 7,501 tons
- Complement:
- 2,386 - 3,103
- Cost:
- £43.036 million / $172.145 million
- Distribution of weights at normal displacement:
- Armament: 6,006 tons, 7.5 %
- - Guns: 6,006 tons, 7.5 %
- Armour: 27,420 tons, 34.1 %
- - Belts: 4,225 tons, 5.3 %
- - Torpedo bulkhead: 5,504 tons, 6.8 %
- - Armament: 7,984 tons, 9.9 %
- - Armour Deck: 8,785 tons, 10.9 %
- - Conning Towers: 923 tons, 1.1 %
- Machinery: 5,682 tons, 7.1 %
- Hull, fittings & equipment: 31,595 tons, 39.3 %
- Fuel, ammunition & stores: 9,058 tons, 11.3 %
- Miscellaneous weights: 635 tons, 0.8 %
- - Hull below water: 175 tons
- - Hull void weights: 175 tons
- - Hull above water: 125 tons
- - On freeboard deck: 85 tons
- - Above deck: 75 tons
- Overall survivability and seakeeping ability:
- Survivability (Non-critical penetrating hits needed to sink ship):
- 159,864 lbs / 72,513 Kg = 54.8 x 18.0 " / 457 mm shells or 34.8 torpedoes
- Stability (Unstable if below 1.00): 1.17
- Metacentric height 9.9 ft / 3.0 m
- Roll period: 17.3 seconds
- Steadiness - As gun platform (Average = 50 %): 70 %
- - Recoil effect (Restricted arc if above 1.00): 0.95
- Seaboat quality (Average = 1.00): 1.64
- Hull form characteristics:
- Hull has a flush deck,
- an extended bulbous bow and a round stern
- Block coefficient (normal/deep): 0.650 / 0.654
- Length to Beam Ratio: 7.12 : 1
- 'Natural speed' for length: 30.41 kts
- Power going to wave formation at top speed: 50 %
- Trim (Max stability = 0, Max steadiness = 100): 43
- Bow angle (Positive = bow angles forward): 30.00 degrees
- Stern overhang: 6.50 ft / 1.98 m
- Freeboard (% = length of deck as a percentage of waterline length):
- Fore end, Aft end
- - Forecastle: 28.85 %, 39.00 ft / 11.89 m, 36.00 ft / 10.97 m
- - Forward deck: 21.15 %, 36.00 ft / 10.97 m, 36.00 ft / 10.97 m
- - Aft deck: 21.15 %, 36.00 ft / 10.97 m, 36.00 ft / 10.97 m
- - Quarter deck: 28.85 %, 36.00 ft / 10.97 m, 36.00 ft / 10.97 m
- - Average freeboard: 36.35 ft / 11.08 m
- Ship space, strength and comments:
- Space - Hull below water (magazines/engines, low = better): 65.0 %
- - Above water (accommodation/working, high = better): 264.7 %
- Waterplane Area: 92,119 Square feet or 8,558 Square metres
- Displacement factor (Displacement / loading): 119 %
- Structure weight / hull surface area: 260 lbs/sq ft or 1,268 Kg/sq metre
- Hull strength (Relative):
- - Cross-sectional: 0.93
- - Longitudinal: 1.89
- - Overall: 1.00
- Excellent machinery, storage, compartmentation space
- Excellent accommodation and workspace room
- Ship has slow, easy roll, a good, steady gun platform
- Excellent seaboat, comfortable, can fire her guns in the heaviest weather
- One of 4 Ohio-class battleships constructed by the United States of America at the end of World War II. Served with distinction in the Korean War, the Vietnam War, World War III, the American Intervention in the Lebanese Civil War, and the Gulf War.
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