Port Owen Marina sits on the Berg River at Velddrif on South Africa's Cape West Coast, roughly 150 km north of Cape Town.

Built along a network of canals, it serves as a hub for recreational boating, with the Port Owen Marina Authority (POMA) managing berthing for both temporary and permanent vessels.

Access to the marina is navigable at most states of tide for boats drawing no more than 1. 5 metres; deeper-keeled vessels should wait at the holding jetty at Rooibaai until sufficient water depth is available.

The Port Owen Yacht Club maintains channel-marking buoys in the river to guide safe passage.

Beyond the Berg River mouth, St Helena Bay offers some of the most sheltered cruising on the South African coast, with a strong prevailing south-easterly summer wind keeping seas relatively flat.