James Watt Dock Marina is located on the River Clyde in Greenock, on the west coast of Scotland, offering straightforward access from both Glasgow and Edinburgh.

Built within a historic dock dating to 1886, it serves as a gateway to the Clyde and the wider West Coast of Scotland. The marina accommodates around 200 pontoon berths for vessels ranging from 7 metres to over 100 metres, with full deep-water access.

Facilities include diesel and petrol, gas refills, and round-the-clock security with CCTV. It is also noted as a convenient stop for sailors looking to unstep a mast before heading inland.