TG 16.5 (Vice Admiral William F. Halsey Jr.) raids Marcus Island; SBDs (VB 6, VS 6) from carrier Enterprise (CV-6) bomb Japanese installations there.
Operation K: two Japanese reconnaissance flying boats (Yokosuka Kokutai), refueled by submarines I-15 and I-19 at French Frigate Shoals, bomb Oahu, T.H., but cause no damage (see 10 March).
Submarine Grampus& (SS-207) torpedoes and sinks Japanese tanker No.2 Kaijo Maru 145 miles south of Truk, 00°56'N, 149°31'E.
Submarine Narwhal (SS-167) torpedoes and sinks Japanese army cargo ship Taki Maru off Amami O Shima, south of Kyushu, 28°37'N, 129°10'E.
Submarine S-39 (SS-144) torpedoes and sinks Japanese oiler Erimo south of Billiton Island, 04°19'S, 108°25'E.
Submarine Sargo (SS-188), while approaching Fremantle, Australia, is mistakenly attacked and damaged by an RAAF Hudson.