K4T – Class 40


Length 12.20 m
Beam 4.50 m
Draft 3.00 m
Displacement 4500 kg
Materials E-Glass, epoxy resin.



The K4T is a fully customisable design; we believe the boat must much the skipper and a winner project must take all aspects into consideration.


GYD has designed a series of hulls considering the various class events involved, the hulls will be tested by the use of CFD (RANS) and by the use historical weather forecasts all boats will be tested in the clients desired events. The results will be analysed and further modifications introduced to create the most suited design for the chosen events or sailing characteristics.


Our experience in shorthanded sailing allows us to produce a well thought out, aesthetic and ergonomic deck design. The proposed deck features a clean modern designed coach roof with double hatch and centre console where all the running rigging, clutches and winch are set. The coach roof features a movable weather protection covering the centre console in rough weather; this allows the hatches to be open without any water ingress. Spray dodging wings are also going to be designed to give maximum protection. The cockpit will be wide and deep to protect the crew in rough weather, 4 more winches are used to control and trim sails an its traveller track has been placed in a beam giving extra protection to the crew. The space left between the traveller beam and the stern has been specially conceived for stacking in heavy weather.


The proposed interior is smart and efficient with the focus on a low centre of gravity but all the while making it practical for the sailor. The galley will situated in between the two entry hatches for easy access and weight distribution. While the Nav Station will in a central position with the screens on a rotating system to enable the sailor to manoeuvre the work area to the desirable position. The helmsman position has been well thought providing good ergonomics; the boat is controlled by a two tillers system and kick up rudders are proposed for two main reasons: lowering drag and creating a safer boat as the rudder is able to be lifted in a collision.

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