Jachthaven Lauwersmeer in Oostmahorn is the only marina situated directly on the Lauwersmeer, set on a higher embankment away from any main road.

With 360 berths, it offers a quiet base for exploring this expansive nature reserve, where a 2,000-hectare lake provides ample room for sailing, mooring at recreational piers, and visiting small islands.

The marina sits opposite Lauwersoog on the southwestern shore. Though Oostmahorn's role as a ferry harbour diminished after the closure of the Lauwerszee, excursion boats to Schiermonnikoog still depart from here, including a catamaran service.

The surrounding area includes holiday homes, the Landal Esonstad holiday park, and the Lauwersmeer Paviljoen restaurant within easy reach.

From Oostmahorn, sailors can connect to the broader Dutch waterway network via the Staande Mastroute, heading toward Dokkum and Leeuwarden or toward Groningen and Delfzijl, and can access the Wadden Sea through the Robbengatsluis lock.