TAKING CONTROL
Yachting World|September 2020
HOW MODERN AUTOPILOTS CAN BE YOUR BEST HELMSMAN, BY MATTHEW SHEAHAN
MATTHEW SHEAHAN
TAKING CONTROL

There is a school of thought in the IMOCA 60 world that a good autopilot system is worth sacrificing a few sails for in the overall campaign budget – that’s how big the perceived advantage is for some. It’s hardly surprising. At speeds that are regularly in the high 20s with sustained bursts in excess of 30 knots, there is much to gain from getting it right and a great deal to lose if you don’t.

At these speeds, the rudder not only alters heading but will behave like an aeroplane’s elevator: every twitch risks changing the fore and aft pitch of the boat. This is already balanced precariously on the giant foil to leeward and the canting keel fi n to windward.

So given this, it’s little surprise the human pilot is considered to be the weakest link in maintaining a high-speed balancing act. As a result, there continues to be a great deal of effort focussed on designing autopilot systems that would do an F18 jet fighter proud.

You might ask yourself what this has to do with grassroots sailing, but the answer is quite bit – thanks in part to this year’s global shutdown. Unless your crew was drawn from a large family living under the same roof, it’s unlikely you were able to sail fully crewed this spring. And even if you were somehow able to pack the weather rail with crew sitting shoulder to shoulder, who else was out there to race?

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