Final answer:
The movement document must be signed by both the person responsible for the movement of goods and the person receiving the goods.
Step-by-step explanation:
If overages, shortages, and damages are discovered during offloading, the person responsible for the movement of the goods and the person receiving the goods must both sign the movement document. This document serves as evidence of the discrepancies found and ensures accountability for both parties. For example, in the context of transport via trailered boats, if a shipment of fisheries is being moved and there are overages, shortages, or damages upon offloading, both the transporter and the recipient of the goods must sign the movement document to acknowledge and document the issues.