A well-known drill ship has said its goodbyes to the River Thames.

The gigantic Sertão, which was docked at the old Tilbury power plant site has finally set off after a long stay on the river, initially arriving in January last year.

It could be seen by many in the town on the water, or by drivers making the trip from Gravesend to Strood.

The ship was used in a huge anti-terror exercise by Essex Police in September, to see how the region would respond to a similar threat.

The Sertão made its way along the Thames just after 4pm.