 An hour and one-half later, "Balch" picked up a sonar contact; but, after a six-depth charge barrage, the contact disappeared from the screen.In March, "Suamico" made a round-trip voyage from Espiritu Santo to New Caledonia and back; then, in late April, she got underway for San Francisco where she underwent repairs until mid-May.Between 19 May and 22 July, the oiler made two voyages between the west coast and Hawaii.