Gary R. Brown Boat Ramp is Barnstable's only municipal launch facility serving Lewis Bay and Hyannis Harbor, featuring a single-lane ramp with floating dock and bulkhead, located at 147 Lewis Bay Road.

Free access with parking for 12-13 vehicle/trailer combinations plus additional overflow parking through the Steamship Authority lot, though the facility can get busy on summer weekends.

The ramp provides quick access to Nantucket Sound (10-15 minute run) and nearby marinas offer fuel, repairs, and transient slip options.