The Hyuga was a Japanese super-dreadnought battleship launched in 1917, belonging to the Ise class. The utilization of twin turrets
rendered these ships much longer than the American counterparts fitted with triple turrets, but those could achieve greater precision
and resulted more reliable. On the other hand, the longer and narrower hull facilitated the high speeds demanded by the Japanese. These
were also the first Japanese warships that adopted the 140-millimeter British cannon.
The ships of the Ise and Fuso class (from which those derived) were modernized during the interwar period with "pagoda style" bridge
masts, new machinery and elongated stern. The remodelation of 1943 converted the Hyuga and the Ise in a hybrid of battleship and seaplane
carrier, by replacing the aft turrets and superstructures with a flight deck equipped with catapults. In July 1945, the Hyuga and the Ise
were sunk on their moorage at Kure by a series of attacks from American aircraft. The illustration shows the Hyuga as she was originally
built; in 1922 the ship was upgraded with the installation of new rangefinders.
Class: Ise (2 units - Ise, Hyuga)
Type: Battleship
Length: 208.1 meters as built; 215.8 meters in 1936; 219.6 meters in 1943
Beam: 28.6 meters as built; 33.8 meters in 1936
Draught: 8.8 meters as built; 9.2 meters in 1936; 9 meters in 1943
Displacement (full load): 31760 tonnes as built; 40340 tonnes in 1936; 39310 tonnes in 1943
Propulsion (as built): 4 x shaft, 4 x steam turbine Parsons/Curtis, 24 x coal/petrol boiler Kampon, 45000 horsepower
Propulsion (in 1943): 4 x shaft, 4 x steam turbine Kampon, 8 x petrol boiler Kampon, 80000 horsepower
Speed: 23 knots (42.5 kilometers/hour) as built; 25-33 knots (46.3-61.1 kilometers/hour) in 1943
Range: 9680 nautical miles (17900 kilometers) at 14 knots as built; 7870 nautical miles (14575 kilometers) at 16 knots in 1936;
9449 nautical miles (17500 kilometers) at 16 knots in 1943
Fuel (as built): 4067 tonnes of coal and 1411 tonnes of petrol
Fuel (after 1936): 5313 tonnes of petrol
Fuel (after 1943): 4249 tonnes of petrol
Complement: 1360 as built; 1376 in 1936; 1463 in 1943
Armament (as built): 12 x 356-millimeter 45-caliber cannon, 20 x 140-millimeter 50-caliber cannon, 4 x 76-millimeter cannon,
6 x 533-millimeter torpedo tube
Armament (in 1940): 12 x 356-millimeter 45-caliber cannon, 16 x 140-millimeter 50-caliber cannon, 8 x 127-millimeter 40-caliber cannon,
20 x 25-millimeter cannon, 3 x aircraft
Armament (in 1943): 8 x 356-millimeter 45-caliber cannon, 16 x 127-millimeter 40-caliber cannon, 57 x 25-millimeter cannon,
22 x aircraft
Armor (as built): 305 millimeters in belt, 76 millimeters in ends, 51 millimeters in main deck, 32 millimeters in lower deck,
305 millimeters in barbettes, 203-305 millimeters in main turrets, 152 millimeters in casemates
Armor (in 1943): 305 millimeters in belt, 76 millimeters in ends, 51 millimeters in main deck, 32-120 millimeters in lower deck,
305 millimeters in barbettes, 203-305 millimeters in main turrets, 152 millimeters in casemates, 152-305 millimeters in conning tower
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