Related Clues:

• Ship's jail
• Horizontal, perhaps
• Sailor's jail
• See 112-Down
• Clash (with)
• Penal institution of a sort
• Adhere (to)
• Ship underside
• Main part of a ship's structure
• Cargo compartment
• Shadow box
• Nautical platform
• Nelson, for one
• Exchange words
• Practice fisticuffs