Relentless is a 33.53 m / 110′1″ luxury motor yacht. She was built by Kingship Marine in 2006.
With a beam of 7 m and a draft of 2.7 m, she has a steel hull and aluminium superstructure. This adds up to a gross tonnage of 263 tons.
She is powered by Caterpillar engines of 550 hp each giving her a maximum speed of 12 knots and a cruising speed of 9 knots. Relentless's maximum range is estimated at 5000 nautical miles.
The motor yacht can accommodate 12 guests in 5 cabins and an exterior design by Ward Setzer.