Ad Lib is a 40 m / 131′3″ luxury motor yacht. She was built by Alloy Yachts in 2006.
With a beam of 8.5 m and a draft of 1.89 m, she has an aluminium hull and aluminium superstructure. This adds up to a gross tonnage of 294 tons.
She is powered by Caterpillar engines of 1400 hp each giving her a maximum speed of 16 knots and a cruising speed of 13 knots. Ad Lib's maximum range is estimated at 2530 nautical miles.
The motor yacht can accommodate 8 guests in 4 cabins with an interior design by Donald Starkey and an exterior design by Dubois Naval Architects.