Jachthaven De Watervriend is a marina located at Sjuwedyk 10–12 in Uitwellingerga, Friesland, situated along the Jurgenssloot. It bills itself as the most beautifully situated marina in Friesland.

The harbor offers approximately 240 permanent berths but does not accommodate visiting boats.

Facilities on site include showers, toilets, laundry, electricity hook-ups, boat storage, a watersports shop, and waste water disposal available for both berth holders and visitors.