Japanese cruiser Tsukuba

Tsukuba before 1913 refit.
History
Empire of Japan
Name	Tsukuba
Ordered	1904 Fiscal Year
Builder	Kure Naval Arsenal
Laid down	14 January 1905
Launched	26 December 1905
Commissioned	14 January 1907
Reclassified	battlecruiser (1912)
Stricken	1 September 1917
Fate	Explosion, Tokyo Bay 14 January 1917
General characteristics
Class and type	Tsukuba-class armored cruiser
Displacement	13,750 long tons (13,970 t) (normal); 15,400 long tons (15,600 t) (max)
Length	134.11 m (440.0 ft) waterline; 137.11 m (449.8 ft) overall
Beam	22.80 m (74.8 ft)
Draught	7.95 m (26.1 ft)
Installed power	20,500 shp (15,290 kW)
Propulsion	Two shaft reciprocating VTE steam engine; 20 Miyabara boilers
Speed	20.5 knots (38 km/h)
Range	5,000 nautical miles (9,000 km) at 14 knots (26 km/h)
Complement	879
Armament	4 × 12-inch (305 mm) guns 12 × 6-inch (152 mm) guns 12 × 120-millimetre (4.724 in) guns 4 × QF 3-pounder Hotchkiss 3 × 450 mm (18 in) torpedo tubes
Armor	Belt: 100–180 mm (3.9–7.1 in) Barbette & turret: 180 mm (7.1 in) Conning tower: 200 mm (7.9 in) Deck: 75 mm (3.0 in)

Tsukuba (筑波) was the lead ship of the two-ship Tsukuba class of armoured cruisers in the Imperial Japanese Navy. She was named after Mount Tsukuba located in Ibaraki prefecture north of Tokyo. On 28 August 1912, Tsukuba was re-classified as a battlecruiser.^[1]