Constance is a 46.33 m / 152′1″ luxury motor yacht. She was built by Feadship in 1986.
With a beam of 8.51 m and a draft of 3 m, she has a steel hull and aluminium superstructure. This adds up to a gross tonnage of 418 tons.
She is powered by Caterpillar engines of 900 hp each giving her a maximum speed of 13 knots and a cruising speed of 12 knots. Constance's maximum range is estimated at 2500 nautical miles.
The motor yacht can accommodate 12 guests in 6 cabins with an interior design by Glade Johnson and an exterior design by De Voogt.