Related Clues:

• Exporting unit
• It may be on one's mind
• Boatload
• Fill with cargo
• See 18-Across
• Shipload
• See 15-Down
• Put ammo into
• Bridge designer's concern
• 1-Down unit
• Cargo
• Tamp a musket
• Cargo weight unit, perhaps
• Haulage unit
• Brick measure