Marina Nieuwboer (Jachthaven Nieuwboer) sits on the Eemmeer and serves as a natural access point for exploring the surrounding waterways.

It is a well-regarded starting point for sailing the Eem, an 18-kilometre river that winds from the lake toward Amersfoort, passing through nature areas, open pastures, and villages such as Eemdijk and Eembrugge along the way.

The marina offers berths for both sloops and sailing yachts, and boat charter is available on site. Its location on the Eemmeer also places it close to Bunschoten-Spakenburg, making it a convenient base for exploring this stretch of Dutch waterway country.