Jachthaven Strijensas is a marina located in South Holland at the mouth of the Sas van Strijen, positioned at the junction of the Haringvliet, the Volkerak, and the Hollands Diep.

This strategic location gives boaters immediate access to the waterways of the south-western Netherlands, including the Zeeland Delta and the Biesbosch. The marina has been in operation for over 50 years and is set within natural reserves.

The site serves as a practical access point for both motorboaters and sailors, offering direct connections to several major waterways from a single departure point.

Its position away from heavy commercial traffic makes it well suited to recreational cruising in a relatively sheltered environment.