1. In the U.S. Navy, a ship larger than a destroyer and smaller than a cruiser, having a displacement of 4000-9000 tons, designed mainly as an escort ship for an attack aircraft carrier.

2. In the British and Canadian navies, an escort ship larger than a corvette and smaller than a destroyer, having a displacement of 1200-2500 tons, corresponding in size to a destroyer escort in the U.S. Navy.