THU 17 JUN 1943
Submarine chaser SC-740 sinks after running aground, 15°32'S, 147°06'E. [Possibly on the Great Barrier Reef. M.B.]
Submarine Drum (SS-228) attacks Japanese convoy, sinking transport Myoko Maru about 175 miles east-northeast of Kavieng, New Ireland, 02°03'S, 153°44'E.
Tank landing ships LST-6 and LST-326 are damaged in collision, North African area, 37°18'N, 09°51'E.