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The were a class of two destroyers of the Imperial Japanese Navy. They were the first large destroyers designed for open ocean service to be built in Japan.

Background

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.

Two vessels were built, based largely on British designs, one at Maizuru Naval Arsenal and the other at the Mitsubishi shipyards in Nagasaki.


Design

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

Externally, the design retained the four-smokestacks of the Ikazuchi-class, however, internally the coal-fired triple expansion steam engines, were replaced with heavy oil-fired Parsons steam turbine engines, which was a first for Japan. The rated power of 20,500 shp gave the vessels a high speed of 33 knots, however fuel consumption severely limited range.

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 mounted staggered to port and starboard. The number of torpedoes was initially three in unreloadable tubes; but this was quickly changed to two in reloadable tubes in operational service.

Operational history

The Umikaze-class destroyers proved to be largely experimental ships. The use of Parsons steam turbines pushed the design to the limits of capability of contemporary engineering and production technology, and the engines were plagued with maintenance issues, as well as tremendous fuel consumption. In an effort to reduce running expenses and to increase range, the boilers were modified from all heavy oil to two heavy oil and four coal-fired boilers. Even with the modification, the Umikaze vessels were largely retained for coastal patrol duties.

The Umikaze ships were rated at first-class destroyers on August 28 1912, and served to June 1 1930 when both were converted to minesweepers. Both were subsequently scrapped in 1936.

List of Ships

Kanji
translation
Name Builder Laid down Launched Completed Fate
海風 Umikaze
"Seawind"
Maizuru Naval Arsenal, Japanmarker 1909-11-23 1910-10-10 1911-09-28 minesweeper W-8 Jun 1, 1930
BU Apr 1 1936
山風 Yamakaze
"Mountain Wind"
Mitsubishi shipyards, Nagasaki, Japan 1909-06-01 1911-01-21 1911-10-21 minesweeper W-7 Jun 1, 1930
BU Apr 1 1936

See also

References

Books

External links



Notes

  1. Jentsura, Warships of the Imperial Japanese Navy, 1869–1945.
  2. Evans, Kaigun: Strategy, Tactics, and Technology in the Imperial Japanese Navy, 1887–1941.
  3. Howarth, The Fighting Ships of the Rising Sun.
  4. Cocker, Destroyers of the Royal Navy, 1893–1981
  5. Nishida, Imperial Japanese Navy
  6. Nishida, Imperial Japanese Navy



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