Grumpy is a 35.66 m / 117′0″ luxury motor yacht. She was built by Delta Marine in 1996.
With a beam of 8.53 m and a draft of 2.26 m, she has a GRP hull and GRP superstructure. This adds up to a gross tonnage of 257 tons.
She is powered by Caterpillar engines giving her a maximum speed of 14 knots and a cruising speed of 11 knots. Grumpy's maximum range is estimated at 3400 nautical miles.
The motor yacht can accommodate 6 guests in 3 cabins with an interior design by Patrick Knowles and an exterior design by Delta Design.