Marks Point Marina sits on the eastern shores of Lake Macquarie, positioned on the northern side of Belmont Bay — making it a central and well-regarded access point on Australia's largest saltwater lake.

The marina is a family-run operation located at 21 Edith Street, Marks Point NSW, and is reachable by boat once through the Swansea bridge.

The facility offers hull and vessel repairs, equipment installation covering electrical, bilge, deck, and running gear, and ongoing boat maintenance services.

Onsite tenants include marine engineering, boat sales, and canvas cover specialists, providing a practical one-stop resource for boat owners.

The marina also shares Belmont Bay with Lake Macquarie Yacht Club and Belmont 16′ Sailing Club, placing it within an active boating community.