2013 Williams TurboJet 285 80HP. The Turbojet 285 will rocket from standstill to 20 knots in four seconds flat and won't stop until the far side of 40 knots. In common with the entire Turbojet range, such performance is made possible by the Webber engine driving through a high performance jet pump system. BOATS.CO.UK ARE THE UK'S DEALERSHIP FOR WILLIAMS PERFORMANCE JET TENDERS. WE SPECIALIZE IN NEW AND PRE-OWNED WILLIAMS. Contact or email Darren@Boats.co.uk onfor more information.