Watersportvereniging Oostvoorne (WVO) is a member-run sailing and watersports club situated on the Brielse Meer, a former tidal inlet of the Brielse Maas that was dammed off from the North Sea and stretches roughly 10 kilometres in length.

The lake lies south of the Nieuwe Waterweg and the Hartelkanaal, with a fixed bridge near the N57 offering approximately 10. 5 metres of clearance for passing vessels.

Members pursue a range of activities on the water, including open sailing dinghies, cabin sailboats, rowing boats, and small motor vessels. A dedicated rowing section is affiliated with the KNRB, the Dutch national rowing federation.

The club operates entirely on a volunteer basis, with members contributing their own time and labour to keep the association running.