Duct structure for watercraft

摘要

A duct structure for a watercraft includes a flexible tube for providing an air intake for the watercraft and a flexible member for being disposed on an inner perimeter of a hole in a hull of the watercraft for holding the flexible tube. A convex portion of the flexible tube engages at least one concave portion of the flexible member around substantially the entire circumference of the flexible member, allowing for easy insertion and removal of the flexible tube from the flexible member.