Waterside Marina sits on Brightlingsea Creek immediately south of the town centre, adjacent to Brightlingsea Harbour and close to the beach.

Owned by Hampstead Homes and managed by Brightlingsea Harbour Commissioners, the marina can accommodate approximately 50 vessels and has undergone a significant dredging programme to allow larger craft to use its berths.

Visitor berths are available subject to availability and must be booked in advance through the Harbour Office. Facilities at the marina include water, electric, and Wi-Fi hook-ups, along with walk-ashore access.

Showers and laundry facilities are located in the marina's shower and toilet block, with door codes available from the Harbour Office. A sewage pump-out system is also available nearby by arrangement with harbour staff.

The surrounding development includes public toilets and a convenience store.