Katori-class battleship

Newly completed Kashima at anchor, 1906
Class overview
Name	Katori class
Builders	Vickers, Armstrong Whitworth
Operators	Imperial Japanese Navy
Preceded by	Mikasa
Succeeded by	Satsuma class
Built	1904–1906
In service	1906–1922
In commission	1906–1923
Completed	2
Scrapped	2
General characteristics
Type	Pre-dreadnought battleship
Displacement	15,950–16,383 long tons (16,206–16,646 t)
Length	456.25–470.6 ft (139.1–143.4 m)
Beam	78–78.16 ft (23.8–23.8 m)
Draught	26.6–27 ft (8.1–8.2 m)
Installed power	20 Niclausse boilers 15,600–16,000 ihp (11,600–11,900 kW)
Propulsion	2 shafts, 2 triple-expansion steam engines
Speed	18 knots (33 km/h; 21 mph)
Range	12,000 nmi (22,000 km; 14,000 mi) at 11 knots (20 km/h; 13 mph)
Complement	864
Armament	2 × twin 12-inch (305 mm) guns 4 × single 10-inch (254 mm) guns] 12 × single 6-inch (152 mm) guns 12–16 × single 3-inch (76.2 mm) guns 3 × single 1.9 in (47 mm) guns 5 × 18 in (457 mm) torpedo tubes
Armour	Waterline belt: 2.5–9 in (64–229 mm) Deck: 1–3 in (25–76 mm) Barbettes: 5–12 in (127–305 mm) Gun turrets: 9 in (229 mm) Conning tower: 9 in (229 mm)

The Katori class (香取型戦艦, Katori-gata senkan) was a two-ship class of pre-dreadnought battleships built for the Imperial Japanese Navy (IJN) in the early 1900s. As Japan lacked the industrial capacity to build such warships itself, they were designed and built in the UK. They were the last pre-dreadnought battleships to be built for Japan at overseas shipyards, and the last to be equipped with a ram. The ships were delivered after the end of the Russo-Japanese War of 1904–1905. They saw no action during World War I, although both were present when Japan joined the Siberian Intervention in 1918. They were disarmed and scrapped in 1923–1925 in accordance with the terms of the Washington Naval Treaty of 1922.