Shoreham Coastguard was paged this afternoon to reports of a piece of ordnance on the dredger City Of Cardiff.
Liasing with Shoreham Port, the British Army detonation squad were called out, and safely removed the item and conducted a controlled detonation ashore.
A spokesman for Shoreham Coastguard said: "Thank you to the captain of the dredger for his hospitality".
