Just B is a 59 m / 193′7″ luxury motor yacht. She was built by Amels in 1974.
With a beam of 10.6 m and a draft of 4 m, she has a steel hull and aluminium superstructure. This adds up to a gross tonnage of 969 tons.
She is powered by engines giving her a maximum speed of 14 knots and a cruising speed of 10.5 knots. Just B's maximum range is estimated at 6000 nautical miles.
The motor yacht can accommodate 14 guests in 7 cabins with an interior design by Nicholson and an exterior design by Indart.