The marina of the Onrust association is situated around the "Onrust" residential area. On one side the Bassin and Spoorhaven and on the other side the Helders Kanaal (the canal). The club has around 100 berths in total. The size of the berths varies from 6 meters to around 17 meters. In the Helders Kanaal the berths are issued at the length of the ship while the boxes are issued at box length (12 meters for the Bassin and 15 meters for the Spoorhaven).