Related Clues:

• Freight weight
• Exporting unit
• High peak
• Boatload
• See 18-Across
• Shipload
• See 15-Down
• Cargo weight unit, perhaps
• Haulage unit
• Brick measure
• A couple thousand pounds
• Won's follower?
• 512,000 drams
• Cargo measure
• It may be long or short