at 2319, "mikuma" and "mogami" each fired six type 93 "long lance" torpedoes at "perth" from about and opened main battery fire from about , assisted by searchlights on their destroyers. at 2327, "mogami" fired six long lances at "houston". they missed, but hit the army transports "sakura maru", "horai maru", "tatsuno maru" and the commander-in-chief of the invading japanese 16th army, lieutenant general hitoshi imamura's transport "ryujo maru".