Jachthaven Oosterhaven sits on the eastern edge of Groningen's city centre, directly on the staande mastroute — the inland waterway corridor running from the IJsselmeer to Delfzijl that accommodates sailing vessels with masts taller than six metres.

The marina offers around 70 to 100 berths, with a water depth of approximately four metres suitable for deeper-draught vessels. Electricity and drinking water are available on the jetties, along with showers, toilets, and Wi-Fi.

The harbour is flanked by historic warehouses, including examples in Jugendstil style, and sits within easy walking distance of Groningen's city centre and the landmark Martinitoren.

Visitor berths are available for transient boats passing through on the staande mastroute.