Related Clues:

• Unbreakable, as a contract
• One-masted sailboat
• Single-masted boat
• Like an inflexible agreement
• Sailing boat
• Relative of a cutter
• John B of song
• Sailboat
• Fore-and-aft-rigged vessel (h)
• The John B, e.g.
• John B of song, for one
• Smack's cousin
• Unbreakable
• The Beach Boys' '___ John B'
• Marina craft