VPLP live simulator showing GB80-02 with T-rudders in a sea state sailing away from the “ghost” boat behind it, with the same setup except no T-rudders. This allows the design team to accurately assess benefits of specific features in different weather conditions and sail angles over time
of uni-directional fibres. However, a conundrum in the very high-performance superyacht world is that the hotel systems that make these such comfortable and luxurious places to spend extended periods of time are typically disproportionately heavy. Gunboat therefore bypassed many traditional marine suppliers for these elements and instead prioritised those in the aerospace sector where feasible. The windows, interior and wiring, for instance, all come from the aerospace industry, helping create a very light displacement for a boat of this size. In contrast to Highland Fling’s stripped
out interior, when she launches in June 2024, 80-02 will have fully fitted accommodation, with an icemaker, oven, generous amounts of refrigeration and air conditioning, plus three VIP cabins, a twin cabin for children and civilised quarters for three crew. As a result, she’s four tonnes heavier than Highland Fling, at 28 tonnes light
ship displacement, and has a maximum payload of six tonnes. Yet this is still a yacht that’s capable of sailing ridiculously fast, with speeds of 30kts possible. Highland Fling is also engineered for
‘GB80-02 will be four tonnes heavier but still capable of 30kt speeds’
a maximum loaded displacement of 34 tonnes. This opens the possibility of retrofitting a luxury interior and associated systems to give the boat a second life after her all-out racing career. It’s an important safeguard against depreciation. Beyond the vast
deck spaces and
single-level living arrangements, shallow draught is one of the key attractions of a performance cruising multihull. Boat 80-02 therefore has cassette style lifting rudders that allow the boat to anchor in very shallow water. VPLP’s in-house dynamic simulator
showed that this cruising-optimised Gunboat 80 would benefit from 1.2-metre long T foils on the rudders. In a Caribbean swell these will reduce pitching by around 30 per cent, creating a much more comfortable ride, while simultaneously
increasing average speeds. However, the simulator showed the
foils would not benefit Highland Fling, given her predominately inshore/coastal regatta programme, which will mostly be in lighter Mediterranean and Caribbean airs and a smaller sea state in coastal waters. On the other hand, in place of Highland Fling’s complex and high maintenance daggerboard bearings, Gunboat 80-02’s boards have maintenance-free self- aligning bearings. These still allow them to be raised and lowered at boat speeds of up to around 15kts. Both boats have Gunboat’s trademark
forward cockpit, with big hydraulic winches to handle halyards, reefing lines, daggerboards, tack lines and furling lines. Sheets for overlapping headsails lead to coachroof winches to the side of the helm stations, while downwind sails are trimmed from winches aft. While Highland Fling races with a large,
professional crew, for their cruising programme 80.02 has an array of 16 buttons to operate the hydraulics at each helm station. This means one person can lift the daggerboards up and down, sheet
�
Key features of the Gunboat 80’s accommodation layout include huge outside and inside living spaces, four large cabins for the owners and guests, working crew quarters with galley and pantry, for added privacy and Gunboat’s signature forward cockpit where most of the lines and halyards are controlled
SEAHORSE 77
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