Jachthaven Biesbosch is a large inland marina located on the River Amer at Drimmelen, close to Dordrecht and Rotterdam.

Originally built in the 1960s with around 400 berths, it expanded through successive basin additions and now holds over 1,400 pontoon berths, making it the largest inland marina in Europe.

It is operated by the Yacht Havens Group and can be reached by road via the A16, A27, or A59, or by rail to Breda Station followed by a short taxi ride.

Sitting directly alongside Biesbosch National Park — one of the largest freshwater wetlands in Europe — the marina offers immediate access to an extensive network of rivers, lakes, and waterways.

From the berths on the Amer, boaters can head out toward Zeeland or the Maasplassen, or explore the quieter channels of the national park itself. The marina monitors VHF Channel 31.