The Michael B. Scanlan Mayport Boat Ramp is Duval County's largest ramp, featuring 6 lanes and capable of handling the largest trailerable boats, with 75 trailer parking spaces, 4 floating docks, restrooms, and 24-hour access. Located at the mouth of the St.

Johns River closest to the Atlantic Ocean, it's ideal for offshore fishing and paddling but expect strong currents, heavy boat traffic, and crowding during peak times and tournaments.

Note that some shoaling occurs just off the ramp base during low tides for the largest vessels.