St Malo Port, Maritime port in Brittany, France

St Malo Port is a commercial harbour in Brittany split between a tidal outer harbour and four inner wet docks reached through the Naye lock, which admits ships up to 150 m long and 21 m wide. The outer harbour takes ferries to England and the Channel Islands, cruise ships and the Bas-Sablons marina; the inner basins handle cargo, ship repair and fishing. Two dry docks serve repair work.

The port served as a strategic base for French privateers in the 18th century who conducted operations against English vessels. This period shaped the region's maritime identity and its importance as a trading hub.

The Vauban basin hosts the start or finish of the Route du Rhum and the Transat Québec-Saint-Malo, when racing yachts gather under the walls of the fortified city. The port's four lighthouses — Rochebonne, Grand Jardin, Bas-Sablons and La Balue — guide vessels in. The quays also serve as a stopover for cruise ships drawn by the old town and nearby Mont Saint-Michel.

Access to the inner wet docks passes through the Naye lock, which takes vessels up to 150 m long and 21 m wide with a 9 m draught; the tide range here reaches 13.60 m, so entry depends on the tide. The Vauban marina lock opens only from mid-tide. The port has four lighthouses, including Rochebonne, Grand Jardin, Bas-Sablons and La Balue.

The port has four lighthouses guiding entry: Rochebonne, Grand Jardin offshore, Bas-Sablons and La Balue. Tides here can reach a range of 13.60 m, among the largest in Europe, and the Naye lock only opens around mid-tide for the Vauban marina.