Early in the afternoon of 19 March, "Triumph" sailed put of the lagoon at Ulithi with the Ryukyu Islands invasion force. When she arrived at her destination early on the morning of the 24th, "Triumph" and her division mates joined the and a patrol craft in minesweeping operations. On the 26th, the destroyer struck a mine, and it caused explosions in her forward magazine which ripped off most of her forward section. Two ships of "Triumph's" unit proceeded to assist the stricken warship but managed to rescue only 172 members of "Halligan's" 325-man complement.