This proved to be extremely unpopular with the crews and was a constant source of confusion in communications, so in 1928, names were assigned.

[3] The Wakatake-class destroyers were essentially slightly modified Momi-class ships with 50 tons additional displacement and a deeper draft to improve handling characteristics in heavy seas, particularly against rolling.

Weaponry layout (with the exception of added AA armaments), general arrangement and silhouette were all identical with the Momi class.

[4] On 15 September 1932, Sawarabi capsized due to poor stability and sank north of Keelung near Taiwan.

From 10 April 1942, the 1st Surface Escort Division of the Southwest Area Fleet was created, and Desdivs 13 and 32 were assigned to it to provide protection for convoys against Allied submarine activity.

Collection of writings by Sizuo Fukui Vol.5, Stories of Japanese Destroyers, Kōjinsha (Japan) 1993, ISBN 4-7698-0611-6