Jachthaven Geijsman is a marina situated in a distinctive location between the dunes and the port area of Rotterdam, directly on the Brielse Meer near Oostvoorne.

The surrounding lake forms the heart of a 750-hectare recreation area roughly ten kilometres long, offering bathing beaches, cycling paths along the shore, and free mooring at various docks.

The marina provides berths at well-equipped jetties with shore power and water, along with toilet and shower facilities, laundry machines, and a wastewater pump station.

A boat lift with a 25-tonne capacity and a boat shed for major maintenance work are also on site, as is a watersports shop stocking accessories, paints, ropes, and Vetus equipment. Motorhome pitches are available for visitors arriving by land.