Naganami in June 1942
|Operators:||Imperial Japanese Navy|
|Preceded by:||Kagerō class|
|Succeeded by:||Matsu class|
|Planned:||14 (1939) + 16 (1941) + 8 (1942)|
|Beam:||10.80 m (35 ft 5 in)|
|Draft:||3.76 m (12 ft 4 in)|
|Speed:||35.5 knots (40.9 mph; 65.7 km/h)|
|Range:||5,000 nmi (9,300 km) at 18 kn (21 mph; 33 km/h)|
|Complement:||225 (Yūgumo, 1941)|
The Yūgumo-class destroyers (夕雲型駆逐艦 Yūgumo-gata kuchikukan) were a group of 19 destroyers built for the Imperial Japanese Navy during World War II. The IJN called them Destroyer Type-A (甲型駆逐艦, Kō-gata Kuchikukan) from their plan name. No ships of the class survived the war.
The Yūgumo class was a repeat of the preceding Kagerō class with minor improvements that increased their anti-aircraft capabilities. The first 11 ships of the class were ordered as part of the 1939 4th Naval Armaments Supplement Programme. Another 16 ships (the Hamanami sub-class) were ordered as part of the 1941 Rapid Naval Armaments Supplement Programme, but of these eight were canceled before being laid down. Another eight ships were planned under the 1942 Modified 5th Naval Armaments Supplement Programme, but these were also canceled.
Design and description
The Yūgumo class was 45 tons heavier and a few feet longer than the Kagerō class, distinguishable in silhouette primarily by the shape of the bridge. The Yūgumo class had a forward slope on the bridge, which was intended to reduce wind resistance and improve stability. Another difference was that the Yūgumo-class vessels were built by three different shipyards, and there were minor differences between individual ships, depending on the builder and when the ship was built.
The general specifications for the Yūgumo class was a 119.17-meter (391 ft 0 in) overall length, with a beam of 10.8 meters (35 ft 5 in) and a draft of 3.76 meters (12 ft 4 in). They displaced 2,110 metric tons (2,080 long tons) at standard load and 2,560 metric tons (2,520 long tons) at deep load. Their crew numbered 228 officers and enlisted men.
The ships had two Kampon geared steam turbines, each driving one propeller shaft, using steam provided by three Kampon water-tube boilers. The turbines were rated at a total of 52,000 shaft horsepower (39,000 kW) for a designed speed of 35 knots (65 km/h; 40 mph).
The main battery of the Yūgumo class consisted of six Type 3 127-millimeter (5.0 in) guns in three twin-gun turrets, one superfiring pair aft and one turret forward of the superstructure. The guns were in a new type of mount (known as the "D" mount) which was able to elevate up to 75° to increase their performance against aircraft; however, their slow rate of fire, slow traversing speed, and the lack of any sort of high-angle fire-control system meant that they were virtually useless as anti-aircraft guns. The ships were also armed with eight 610-millimeter (24.0 in) torpedo tubes in a two quadruple traversing mounts; one reload was carried for each tube. Their anti-submarine weapons comprised two depth charge throwers for which 36 depth charges were carried.
As built, the Yūgumo class had four Type 96 25-millimeter (1.0 in) anti-aircraft guns in two twin-mounts forward of the aft smokestack. as with other destroyer classes, as the Pacific War progressed, anti-aircraft armaments were increased. Later, two triple-mount and one twin-mount Type 96 were added forward of the bridge and a Type 22 radar. Units surviving into 1944 had a second triple-mount added on a platform behind the forward smokestack. The six units surviving into 1944 received up to twelve additional single-mount Type 96s and a Type 13 radar. Kiyoshimo also received a number of Type 93 13mm machine guns.
The Yūgumo class were considered elite units and always assigned to escort primary fleet units. They were all lost during the Pacific War.
Ships in class
|Ship #||Ship||Shipyard||Laid down||Launched||Completed||Fate|
|115||Akigumo (秋雲)||Built as part of the Kagerō class|
|116||Yūgumo (夕雲)||Maizuru Naval Arsenal||12 June 1940||16 March 1941||5 December 1941||Sunk, Battle of Vella Lavella, 6 October 1943|
|117||Makigumo (巻雲)||Fujinagata Shipyards||13 December 1940||5 November 1941||14 March 1942||Sunk after surface action, 1 February 1943|
|118||Kazagumo (風雲)||Uraga Dock Company||23 December 1940||26 September 1941||28 March 1942||Torpedoed at Davao Gulf, 8 June 1944|
|119||Naganami (長波)||Fujinagata Shipyards||5 April 1941||5 March 1941||30 June 1942||Air attack, Ormoc Bay, 11 November 1944|
|120||Makinami (巻波)||Maizuru Naval Arsenal||11 April 1941||27 December 1941||8 August 1942||Sunk, Battle of Cape St. George, 25 November 1943|
|121||Takanami (高波)||Uraga Dock Company||29 May 1941||16 March 1942||31 August 1942||Sunk, Battle of Tassafaronga, 30 November 1942|
|122||Ōnami (大波)||Fujinagata Shipyards||15 November 1941||13 August 1942||29 December 1942||Sunk, Battle of Cape St. George, 25 November 1943|
|123||Kiyonami (清波)||Uraga Dock Company||15 October 1941||17 August 1942||25 January 1943||Air attack, NNW of Kolombangara 20 July 1943|
|124||Tamanami (玉波)||Fujinagata Shipyards||16 March 1942||26 December 1942||30 April 1943||Torpedoed, WSW of Manila, 7 July 1944|
|126||Suzunami (涼波)||Uraga Dock Company||27 March 1942||26 December 1942||27 July 1943||Air attack, Rabaul, 11 November 1943|
|127||Fujinami (藤波)||Fujinagata Shipyards||25 August 1942||20 April 1943||31 July 1943||Air attack N of Iloilo, 27 October 1944|
|Dummy budget covering Yamato-class battleships|
|340||Hayanami (早波)||Maizuru Naval Arsenal||15 January 1942||19 December 1942||31 July 1943||Torpedoed near Tawi-Tawi, Philippines, 7 June 1944|
|341||Hamanami (濱波)||Maizuru Naval Arsenal||28 April 1942||18 April 1943||15 October 1943||Air attack, Ormoc Bay, 11 November 1944|
|342||Okinami (沖波)||Maizuru Naval Arsenal||5 August 1942||18 July 1943||10 December 1943||Air attack W of Manila, 13 November 1944|
|343||Kishinami (岸波)||Uraga Dock Company||29 August 1942||19 August 1943||3 December 1943||Torpedoed W of Palawan Island, 4 December 1944|
|344||Asashimo (朝霜)||Fujinagata Shipyards||21 January 1943||18 July 1943||27 November 1943||Air attack SW of Nagasaki, 7 April 1945|
|345||Hayashimo (早霜)||Maizuru Naval Arsenal||20 January 1943||20 October 1943||20 February 1944||Air attack off Semirara Island, 26 October 1944|
|346||Akishimo (秋霜)||Fujinagata Shipyards||3 May 1943||5 December 1943||11 March 1944||Air attack, Manila, 13 November 1944|
|347||Kiyoshimo (清霜)||Uraga Dock Company||16 March 1943||29 February 1944||15 May 1944||Torpedoed after air attack, 26 December 1944|
|Cancelled on 11 August 1943|
Cancelled on 11 August 1943
- Campbell, John (1985). Naval Weapons of World War II. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-459-4.Campbell, John (1985). Naval Weapons of World War II. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-459-4.
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