G.B. PLYMOUTH. Princess Yachts. 72 foot Motor Yachts. Left, Tony Bruce, higher, Darrell Bratcher, then Craig Wickes, Mark Lavis on the right. The men are, at my request, peering through one of the very many different panels cut out of plywood that will fit into a yacht that will sell for millions of pounds. While the fundamental structure of the 72 foot yachts remains fixed, they are usually extensively customised inside to provide the space and finish the owner requires. 2013.