Lady Goodgirl is a 42.9 m / 140′9″ luxury motor yacht. She was built by Hall Russel in 1964.
With a beam of 8 m and a draft of 2.6 m, she has a steel hull and steel superstructure. This adds up to a gross tonnage of 316 tons.
She is powered by Caterpillar engines of 650 hp each giving her a maximum speed of 12.5 knots and a cruising speed of 11 knots. Lady Goodgirl's maximum range is estimated at 2600 nautical miles.
The motor yacht can accommodate 11 guests in 5 cabins with an interior design by Susan Puleo and an exterior design by Philip Rhodes.