Miami's first and only seaplane base might be in line for a major facelift after settling a seven-year legal battle with the city, its landlord on Watson Island.

The proposal has been moving forward since the operator and the Miami Sports and Exhibition Authority, which leases the 2.9-acre property, ended their legal dispute in 2014 with a new lease spelling out redevelopment parameters.

Nautilus Enterprises LLC wants to build a 44,838-square-foot terminal and a 3,600-square-foot hangar and add 51 parking spaces. The existing 2,038-square-foot terminal would be converted to a restaurant and bar, and a small customs trailer would move into permanent quarters.