Possible Clues:

• It's for a ship, and that's about the size of it
• In general character, complainant carried weight
• Cargo weight
• Shipping measure
• Merchant ship's cargo
• Pentagon losing head is prepared for US duty
• No agent arranging weight that can be carried
• Redeployed agent on ship may have this duty
• Shipping figure provides shade over horse
• No agent ordered as much as can be carried