(Cause Unknown)

THU 2 JUL 1942
Pacific
Submarine Plunger (SS-179), attacking Japanese convoy off the mouth of the Yangtze, sinks army cargo ship No.3 Unyo Maru, 30°44'N, 123°09'E.

Japanese guardboats No.1 Kaiyo Maru and No.2 Kaiyo Maru are wrecked (cause unknown) off Guadalcanal.