Yamakaze (山風, "Mountain Wind")^[1] was an Umikaze-class destroyer of the Imperial Japanese Navy. The second and last ship of this class to be built, she was completed in 1911. After mostly serving as a coastal patrol boat during World War I, she was converted to a minesweeper on June 1, 1930, along with her sister ship, Umikaze. On April 1, 1936 she was scrapped after 25 years of service.

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Yamakaze at Ominato, 1926
History
Japan
Name	Yamakaze
Builder	Mitsubishi shipyards, Nagasaki, Japan
Laid down	June 1, 1910
Launched	January 21, 1911
Commissioned	October 21, 1911
Decommissioned	April 1, 1936
Renamed	Minesweeper No. 8, 1930
Reclassified	As minesweeper, 1930
Stricken	1936
Fate	Sold for scrap, 1936
General characteristics
Class and type	Umikaze-class destroyer
Displacement	1,030 long tons (1,050 t) normal, 1,150 long tons (1,170 t)
Length	94.5 m (310 ft 0 in) (pp), 98.5 m (323 ft 2 in) (o/a)
Beam	8.6 m (28 ft 3 in)
Draught	2.7 m (8 ft 10 in)
Installed power	8 boilers 20,500 shp (15,300 kW)
Propulsion	3 shafts; 3 steam turbine sets
Speed	33 knots (61 km/h; 38 mph)
Range	850 nmi (1,570 km; 980 mi) at 11 knots (20 km/h; 13 mph)
Complement	140
Armament	2 × 4.7 in (120 mm) guns 5 × 12 pdr (76.2 mm) guns 3 × single 18 in (457 mm) torpedo tubes

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The Umikaze-class destroyers were designed after the Russo-Japanese War, as the Imperial Japanese Navy realized that the vessels in its current fleet of destroyers were too small and poorly designed for extended "blue water" operation.^{[2][page needed]}

The Umikaze-class ships were based largely on the Royal Navy Tribal-class destroyers ^{[citation needed]}. In terms of displacement, each vessel was almost three times larger than the previous destroyers in the Japanese Navy.

The ship was 98.5 metres (323 ft 2 in) long overall and 94.5 metres (310 ft 0 in) between perpendiculars, with a beam of 8.5 metres (27 ft 11 in) and a draft of 2.7 metres (8 ft 10 in). Displacement was 1,030 long tons (1,050 t) normal and 1,150 long tons (1,170 t) full load. Externally, the design retained the four-smokestacks of the Ikazuchi class, however, internally the coal-fired triple expansion steam engines, were replaced by mixed-fired (i.e. a mixture of oil and coal-fired) boilers feeding steam to Parsons steam turbines, which drove three propeller shafts. The rated power of 20,500 shp (15,300 kW) gave the vessels a speed of 33 knots (61 km/h; 38 mph). The ship had a range of 2,700 nautical miles (5,000 km; 3,100 mi) at 15 knots (28 km/h; 17 mph).^[3]

Armament was increased over the previous classes, with a pair of QF 4.7 inch Gun Mk I - IV guns, with one gun mounted on a small shelter forward and another on the quarterdeck and five QF 3 inch 12 pounder guns; One gun was mounted on each broadside at the break of the forecastle and the remaining guns were mounted on the centerline. The number of torpedoes was initially three in unreloadable tubes; but this was quickly changed to two in reloadable tubes in operational service.^[4]

After some delays due to her turbines not being delivered until March 1910, Yamkaze was launched on January 21, 1911 and commissioned on 21 October 1911.^[5]

During World War I, Yamakaze mostly served as a coastal patrol boat and did not participate in any battle.^{[citation needed]} In September 1914 Yamakaze, along with sister ship Umikaze and the armored cruisers Kurama, Tsukuba and Asama set out from Yokosuka to search for the German East Asia Squadron commanded by Vice Admiral Maximilian von Spee in the South Sea Islands.^[6] After the German cruiser Emden was sunk in the Battle of Cocos by the Australian cruiser Sydney, the Japanese forces in the South Pacific and Indian Ocean were reorganised into two squadrons to search for von Spee's ships, with Yamakaze joining the Second Southern Squadron, based at Truk.^[7] On June 1, 1930, she was converted to a minesweeper and renamed W-8. Yamakaze was scrapped on April 1, 1936.^{[8][verification needed]}