WSV Maartensgat is a marina and watersports association harbor tucked into the historic center of Dordrecht, situated in a small inner basin practically at the foot of the Grote Kerk.

The harbor connects directly to the Oude Maas, giving boaters easy access northward to the Noord, Wantij, and Beneden Merwede waterways. Access from the river is via the Leuvehaven and the Mazelaarsbrug.

Skippers approaching from the Zwijndrechtse brug should turn to starboard before the waterbus stop at Hooikade. The harbor monitors VHF channel 74.

Visiting boats are welcome, and the marina's central location puts Dordrecht's old town immediately within walking distance.