insister, use the link, check for streets/roads and make your way to Dukhan beach

http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=dukhan,+qata...

Regards!!

PS:by the way to my understanding dukhan beach is not public and you might need to acces the QP club (meaning you will need the QP ID and the QP Club ID to access)