ESSEX Firefighters are at the scene of a fire on-board a cargo ship at Tilbury docks. Crews are assisting on-site firefighting teams to safely manage the fire, which involves 2500 tonnes of scrap metal. 25 firefighters) plus a team of specialist officers. Update 4pm – Crews are continuing to work with on-site teams to monitor and manage the fire safely. 20 firefighters) plus a team of specialist officers.