Havenkwartier Blauwestad is a modern marina situated on the southern shore of Oldambtmeer, near the town of Blauwestad. It offers 86 mooring places and serves as one of the main access points to the lake.

Both it and its sister marina, Jachthaven Midwolda, hold nominations for the Blauwe Vlag, an international eco-label for marinas.

A wooden footbridge connects the harbour directly to Strand Zuid, a day-recreation area featuring a sandy beach, a sunbathing meadow, and a playground.

As one of the busiest entry points to Oldambtmeer, the marina and beach tend to draw larger crowds during summer and sunny weekends; visiting on weekdays or early in the morning generally offers a quieter experience.

The surrounding network of paths allows visitors to explore less-trafficked stretches along the lake's perimeter.