WSV Het Esmeer is a yacht club marina located on Het Esmeer, a former sand excavation near the village of Aalst in the Bommelerwaard region of Gelderland.

The lake connects to the Afgedamde Maas and can be reached from the Merwede direction via the Wilhelminasluis at Andel — approximately 20 minutes from the lock, turn left after the quay at Poederoijen.

Approaching from Heusden, pass the Aalst–Veen ferry and turn right about 700 meters beyond jachtwerf Neptunus. The marina accommodates visiting boats up to 18 meters in length and offers shore power, drinking water, sanitary facilities, and a boat crane.

The surrounding area features the Neswaarden recreational site — a natural playground with beach, sunbathing area, and sports fields — directly adjacent to the harbor.

From here, boaters can make day trips to destinations including Gorinchem, Woudrichem, Heusden, and Den Bosch.