As many people have requested the exact location of the ferry terminals we have added a page with maps of those terminal locations.
Unfortunately Google Maps does not actually show the location of the Dubai ferry terminals so we have added screenshots of the locations themselves.
the maps we have added are only approximate but should be able to give you an idea of where the ferry terminals are and how easy they are to get to. Once you are on your way you should spot them really easily.
The ferry Marina and Al Ghubaiba ferry terminals are both very close to public transport links so are easy to access from the Metro and the Tram.
Check out the maps page here.