Jachthaven De Welle is a large, well-appointed marina situated on the Nieuw Heerenveense Kanaal, northwest of Heerenveen in the province of Friesland.

The harbor offers 375 berths, accommodating both seasonal residents and transient visitors, with 10 dedicated guest moorings.

Its location is convenient for exploring the Friese meren, the Turfroute, and southbound waterway routes, and it sits close to the A7 and A32 motorways for easy road access.

On-site facilities include electricity hook-ups, fresh water, showers, restrooms, fuel, Wi-Fi, a boat lift, winter storage, a trailer ramp, and a launderette.

The marina is noted for its spacious layout, with generous berths and ample parking alongside the docks. Despite its size, the atmosphere remains quiet and welcoming.