The Diamond F55 Ultra is a contemporary 16.9-metre power catamaran created for luxurious family cruising and sophisticated onboard entertaining. Her exceptional 8.4-metre beam provides impressive stability and outstanding interior volume, while the flybridge, expansive aft deck and open-plan saloon offer generous social spaces across three levels. Owners may choose between three- or four-cabin arrangements, including an oversized master suite designed to maximise the catamaran’s full beam. Power options include twin Yanmar 440 HP engines or upgraded twin 640 HP units, supported by an 1,800-litre fuel capacity and 1,000 litres of fresh water. Exterior highlights include a protected hardtop flybridge, walk-around decks, multiple lounging and dining areas, and broad swim steps for convenient water access. Custom hull colours, premium JL Audio and dynamic entertainment lighting are also available. The F55 Ultra combines distinctive styling, flexible accommodation and the natural space and stability advantages of a modern power catamaran.