A quiet boat is a fast boat, according to Tom Burnham, Artemis Racing coach in the America's Cup and the pitman on top TP52 Quantum Racing. Which is why it's good to have a team where everyone knows what's going on tactically - even the musclemen on the grinding pedestals. And a shouty boat is nearly always a slow one. Tom offers some tips for how to reduce the noise - and stress level - on your boat...