Solid Sapele Marine Plywood is BS1088 rated and also Llyod's registered. Solid Sapele is the top quality in marine plywood, it has an excellent rating for rot resistance, it is stable, and it is a beautiful looking plywood with it's rotary cut faces.
You will typically find solid sapele on the hulls of Riva and classic Chris Craft boats. Once you clear coat the plywood you see the beauty that is held in the wood.