How do you clean hull and proper dunnaging?

To clean a hull, start by removing any loose debris and using a pressure washer or scrub brush with appropriate marine cleaning solutions to eliminate dirt, algae, and salt buildup. Rinse thoroughly to avoid residue. Proper dunnaging involves securing cargo with dunnage materials like wood or foam to prevent movement during transport, ensuring adequate ventilation, and using moisture barriers to protect against water damage. Always inspect the dunnage for cleanliness and integrity before loading.