was a of the Imperial Japanese Navy. Her name means "Billow Wave" (Big Rough Waves).
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 119.17m (390.98feet) overall, with a beam of 10.8m (35.4feet) and a draft of 3.76m (12.34feet).[1] They displaced 2110t at standard load and 2560t at deep load.[2] 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 52000shp for a designed speed of 35kn.[3]
The main armament of the Yūgumo class consisted of six Type 3 1271NaN1 guns in three twin-gun turrets, one superfiring pair aft and one turret forward of the superstructure.[2] 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.[4] They were built with four Type 96 251NaN1 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 610mm 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.[2]
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, 55miles east-southeast of Cape St. George (-5.25°N 202°W). Ōnami blew up and sank with all hands, including ComDesDiv 31 (Captain Kiyoto Kagawa).[5] Captain Kiyoto Kagawa was posthumously promoted two ranks, one of the few IJN destroyer skippers so honored.