sentences:  She was sunk by gunfire, "Frost" taking 13 of her crew prisoner.A two-hour attack on 3 July, during which the target submarine attempted to torpedo "Frost", resulted in the sinking of "U-154".During her third hunter-killer patrol, from 20 August 1944 to 2 October, "Frost" rescued survivors of who had capsized in a hurricane during the night of 13–14 September.