Jachthaven Zuidwesthoek is a full-service marina situated on the southwestern shore of the Paterswoldsemeer, just south of the city of Groningen, in the village of Haren.

Founded in 1984, it offers around 500 berths along with a transient harbor, winter storage, and professional boat maintenance.

Beyond moorage, the marina provides boat rentals including dinghies, sailing lessons, a watersports shop, and fuel including petrol and diesel.

The surrounding natural scenery of the Paterswoldsemeer, combined with views toward the Groningen skyline, makes it a popular base for recreational boaters exploring this northern lake.