was a of the Imperial Japanese Navy during World War II. Her name means "Billow Wave" (Big Rough Waves).

Design and description The Yūgumo class was a repeat of the preceding with minor improvements that increased their anti-aircraft capabilities. Their crew numbered 228 officers and enlisted men. The ships measured overall, with a beam of and a draft of .Sturton, p. 195 They displaced at standard load and at deep load.Whitley, p. 203 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 for a designed speed of .Jentschura, Jung & Mickel, p. 150

The main armament of the Yūgumo class consisted of six Type 3 guns in three twin-gun turrets, one superfiring pair aft and one turret forward of the superstructure. The guns were able to elevate up to 75° to increase their ability against aircraft, but 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.Campbell, p. 192 They were built with four Type 96 anti-aircraft guns in two twin-gun mounts, but more of these guns were added over the course of the war. The ships were also armed with eight 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.

Construction and career On the night of 24–25 November 1943, Ōnami led a troop transport/evacuation run to Buka Island. In the Battle of Cape St. George, she was torpedoed by the destroyers , and/or , east-southeast of Cape St. George (). Ōnami blew up and sank with all hands, including ComDesDiv 31 (Captain Kiyoto Kagawa). Onami's Commanding Officer, Commander Kiyoshi Kikkawa, was posthumously promoted two ranks, one of the few IJN destroyer skippers so honored.

Notes

References

External links CombinedFleet.com: Yūgumo-class destroyers CombinedFleet.com: Onami history