Related Clues:

• One way to travel by sea
• Stroke, stroke, stroke...
• Pool exercise
• Travel over the bounding main
• Fly (through)
• Sink alternative
• Spanker, e.g.
• Ply the seas
• Type of boat
• Clipper feature
• Kind of boat
• Spinnaker, for one
• Come crawling back?
• Go smoothly
• Catch the wind