SPECIFICATIONS: IOWA CLASS BB
Displacement: 48,500 tons standard, 57,450 tons war load.
Dimensions: Length: 887', 3" Beam, Overall: 108', 2" Draught: 38'
Machinery: 4-Shaft geared steam turbines delivering 212,000 shp.
(158,088 KW)
Speed: 33 Knots
Armour: Belt: 12'2"(310mm), Decks: 1.5" - 4.7"(38-120mm), Turrets: 18"(457mm)
Armament: 9x 16"/50cal.(406mm), 20x 5"/54cal. DP(127mm), 60x 40mm, 60x 20mm AA guns.
Aircraft: 3 (2 Catapults)
Complement: 1,921 Officers and Men.
NOTE: USS Missouri BB-63 had a slightly heavier displacement and was longer than the rest of the Iowa's.
SPECIFICATIONS: MONTANA CLASS BB
Displacement: 60,500 tons standard; 70,783 tons full load
Dimensions: 925 x 121 x 36.6 feet/281.9 x 36.9 x 11.2 meters
Propulsion: Steam turbines, 8 600 psi boilers, 4 shafts, 172,000 shp.
Speed: 28 Knots
Complement: 2,149 Officers and Men.
Armor: 10.2-16.1 inch belt, 6-7.35 inch deck, 18-21.3 inch barbettes, 10-22.5 inch turrets, 7.4-18 inch CT
Aircraft: 2 catapults, 3 floatplanes; no hangar
Armament: 4 triple 16"/50cal, 10 dual 5"/54cal DP, 10 quad 40 mm AA, 56 single 20 mm AA