Jachthaven 't Oude Maasje is a marina located at Overdiepsekade 2 in Waspik, situated in a rural waterside setting along 't Oude Maasje.

The marina offers berths for boats of all sizes, a wide boat ramp suitable for day trips, fishing, or maintenance, and a storage yard that can accommodate vessels up to 16 meters in length.

Winter storage is available from 1 October through 1 April, and the storage area is freely accessible year-round. The marina sits at the junction of the Kerkvaart side channel, making it a convenient access point for boaters heading toward the Biesbosch.

From here, traveling via the Kerkvaart to the first entrance of the Biesbosch takes approximately 1. 5 hours by boat.