Leander G was designed by Claus Kusch for Brigadier Sir Timothy Landon in 1990 and launched in 1992. She has a steel hull with a bulbous bow with a classic canoe stern. She has a 3-deck aluminium superstructure including a helicopter deck with 6 decks in total. Communal guest areas include a Main Saloon and Dining Room on her Main Deck, a Boat Deck Saloon, Jacuzzi Deck, Observation Deck and Study, Fitness Room, Dive Room and a Swim Platform. Leander G can accommodate up to 22 guests in 10 luxurious suites. She has 2 Master Suites with offices and forward-facing saloons, 3 Double Guest Cabins and 5 Twin Guest Cabins all of which have private bathrooms.

During Leander G outfitting she was sold to Sir Donald Gosling. At this time, she had not been officially named. He chose the name Leander after the first Royal Navy ship in which he served, HMS Leander. She was often seen flying the British White Ensign because Sir Donald was a member of the Royal Yacht Squadron with the Red Ensign being flown when chartered.

After the Royal Yacht Britannia was decommissioned in 1997, Leander G was chartered on many occasions by the British Royal Family for official trips and private holidays.

Leander G was sold to an anonymous private buyer in 2016.