Jachtaven Steenwijkerdiep is a marina on the edge of Steenwijk, situated at the junction of waterways leading to Friesland, the IJsselmeer, the historic village of Giethoorn, and Nationaal Park de Weerribben.

The location makes it a practical base for exploring the broader waterway network of the Kop van Overijssel, with destinations such as Belterwijde and Beulakerwijde reachable within an hour by boat.

The marina accommodates around 220–230 permanent berths for vessels up to 16 meters in length, with a maximum draft of 2. 30 meters. Berths are equipped with water and shore power connections.

On-site facilities include showers, toilets, a launderette, a small canteen, a boat lift with a capacity of up to 30 tonnes, and winter storage. Boat rental is also available. The marina does not offer visitor berths.