Plymouth Yacht Haven is a modern marina situated on the Mount Batten peninsula on the Cattewater, where the River Plym meets Plymouth Sound on Devon's south coast. The marina offers around 450 fully serviced berths dredged to 2.

2 metres, accommodating vessels up to 45 metres LOA with a draught of up to 7 metres. It is accessible at all states of the tide, with the Mount Batten peninsula providing natural shelter from prevailing winds.

The site includes one of the southwest's most comprehensive boatyard operations, featuring a 75-ton boat hoist, two large indoor storage hangars, and a range of on-site marine engineers and maintenance companies.

Visitor berths are located on the outer west pontoon. The marina is also adjacent to the South West Coast Path, and a ferry connects Mount Batten to Plymouth's Barbican for those arriving by water.