Japanese battleship Aki

Broadside view of Aki
History
Japan
Name	Aki
Namesake	Aki Province
Ordered	1904
Builder	Kure Naval Arsenal, Japan
Laid down	15 March 1906
Launched	14 April 1907
Commissioned	11 March 1911
Stricken	1923
Fate	Sunk as target, 2 September 1924
General characteristics
Class and type	Satsuma-class semi-dreadnought battleship
Displacement	20,100–21,800 long tons (20,423–22,150 t)
Length	492 ft (150 m)
Beam	83 ft 7 in (25.5 m)
Draft	27 ft 6 in (8.4 m)
Installed power	15 Miyabara water-tube boilers 24,000 shp (18,000 kW)
Propulsion	2 shafts, 2 steam turbine sets
Speed	20 knots (37 km/h; 23 mph)
Range	9,100 nmi (16,900 km; 10,500 mi) at 10 knots (19 km/h; 12 mph)
Complement	931
Armament	2 × twin 12 in (305 mm) guns 6 × twin 10 in (254 mm) guns 8 × single 6 in (152 mm) guns 12 × single 12 pdr (3 in (76 mm)) guns 5 × 18 in (457 mm) torpedo tubes
Armor	Waterline belt: 4–9 in (102–229 mm) Deck: 2–3 in (51–76 mm) Gun turrets: 7–9.5 in (178–241 mm) Conning tower: 6 in (152 mm) Casemates: 6 in (152 mm)

Aki (安芸) was one of two Satsuma-class semi-dreadnought battleship built for the Imperial Japanese Navy (IJN) during the first decade of the 20th century. She was the second battleship built domestically in Japan and the first to use steam turbines for propulsion. The ship was named for Aki Province,^[1] now a part of Hiroshima Prefecture. The ship saw no combat during World War I. Aki was disarmed in 1922 and sunk as a target in 1924 in accordance with the terms of the Washington Naval Treaty of 1922.