London Thamesport is a container seaport on the River Medway, serving the North Sea. It is on the Isle of Grain, in the Medway unitary authority, Kent, England in the United Kingdom. It is sited on the former Port Victoria.
The heart of Thamesport is a 655 metre-long deep water dock. It is served by seven crane tracks, and can service vessels with draughts of 14.5m. The temporary storage facility has capacity for 26,000 TEU ; that is 13,000 standard containers. This is fully automatic; 19 cranes automatically move the containers. 635,000 TEU can be processed annually. In the long-term the capacity could be doubled.