Each "Orca"-class vessel shares the same dimensions of being long, a beam of , a draught of , and a displacement of 210 tonnes. Powered by two Caterpillar 3516B marine diesel engines, each rated for 2,500 horsepower at 1,600 revolutions per minute, they are capable of , and have an endurance of at . Able to be operated by a core crew of five, the maximum bunk space on the Orcas is twenty-four with two two-bunk cabins for the crew (officer in charge, executive officer, senior bosun's mate, "Orca"-class engineer) two six bunk cabins and two four bunk cabins for instructors and trainees. Each "Orca" carries one Zodiac SR2 inflatable rescue boat that holds two sailors.