The Voorhaven Jachtensluis Volkerak Zw is the southern (Zuider) outer harbour approach to the yacht lock at the Volkeraksluizen complex, situated on the Volkerakdam between the Hollands Diep and the Volkerak near Willemstad.

The broader lock complex includes three parallel commercial shipping locks, four drainage sluices, and a dedicated yacht lock, making it the busiest and largest inland navigation lock complex in Europe, handling around 115,000 commercial vessels and 45,000 recreational vessels annually.

Taller recreational vessels that cannot use the yacht lock must instead transit via the commercial shipping locks, using VHF channel 64 and the call sign "Centrale Volkeraksluizen," entering through the Zuider or Noorder Voorhaven.

Mariners should be aware that the yacht lock has been operating under restrictions since mid-2025 due to damage to a lock gate pivot, with waiting times potentially reaching around two hours during the 2025 sailing season.