Boat shoes are purpose designed footwear. Different styles and types are available for the various disciplines of being out & about on the water. The common theme for all marine footwear will be a non marking sole, and a low profile grip. These are both there to stop you from damaging the deck of your yacht or motor boat. Deep treads will attract gravel and dirt from a marina, and will then mark your boat. There are three main types of sailing footwear: Traditional deck shoes made of leather, modern deck trainers made with technologically advance materials, and sailing boots.