Possible Clues:

• ''John B,'' in song
• Vessel in popular competition making comeback
• One-masted sailing ship
• Vessel that finds calm waters on the way back
• Boat causes waters to rise
• Knockabout, e.g.
• Single-masted sailing boat
• Up here there could hardly be enough water for a naval vessel
• 19th-century warship
• John B. of song