Actually 55.65 was the old record. Sailrocket clocked an average of 59.23 and peaked at 62.53 on the record-breaking run. And I guess they'll be having a go any day now to raise the record to 60+ knots. Amazing!
And Brian, Paul Larsen is an Aussie, so although the design and build was a UK effort (in fact an entirely Hampshire/Isle of Wight effort), all our friends Down Under can claim a piece of the action.
Greg