Northbridge Marina is a long-established boating facility situated on Sailors Bay in Middle Harbour, less than 8 kilometres by road from Sydney's CBD and approximately 2. 5 kilometres by water from Spit Bridge.

Serving the boating community for over 30 years, it offers 24 floating berths accommodating vessels up to 60 feet (18. 3 metres) in length, with each berth supplied with power, potable water, rubbish disposal, and marine sewage disposal.

The marina sits alongside several other Middle Harbour facilities, including D'Albora Marina and Roseville Bridge Marina, making Sailors Bay a well-serviced hub for Sydney boaters seeking access to the sheltered, pristine waters of Middle Harbour and beyond.