Related Clues:

• Jolly Roger, in 'Peter Pan'
• Britain has rejected private sort of prison
• Shipboard lockup
• End of spinnaker in large sailing ship
• Jail on a naval ship
• Sailor's last in large ship
• Queen boards large sailing ship
• Bad salt container?
• Navy guard house
• A two-masted boat and an abbreviation of an army rank
• Right to enter large ship
• Seagoing cooler?
• Clink on the drink
• Sailing vessel of some size straddling river
• Jail, informally