Why Lagoon Motor Yachts? The current quest for comfort, long distance cruising capacity and safety make a catamaran the ideal boat to meet these. The Multihull Group (TMG) part of the Windcraft Group sole importers of Lagoon and McConaghy catamarans into Australia. Multihull Brokerage. View new or used boats for sale from across the US, Europe and Rest of World on YachtWorld. Offering the best selection of Lagoon models to choose from.