Vehicles and apparatus for locomotion by water, namely, motorboats, yachts, ships, patrol boats, mine sweeping boats, coastal defense ships, and parts therefor not included in other classes, namely, structural parts of boats and ships, hulls, fenders, screw propellers for vessels, steering gears and rudders for vessels, stabilizers for reducing the vertical, pitching, and rolling motion of boats and ships

ships, boats, hydrofoils, and structural parts therefor