Charlotte Amalie Harbor Seaplane Base (IATA: SPB, FAALID: VI22), also known as St. Thomas Seaplane Base, is located in the harbor by Charlotte Amalie, Saint Thomas, U.S. Virgin Islands. This private-use airport is owned by the Virgin Islands Port Authority.[1]
Historically, Virgin Islands Seaplane Shuttle[3][4][5][6] operated scheduled passenger service during the 1980s from the Charlotte Amalie seaplane base with Grumman Mallard aircraft. These Grumman amphibious aircraft were powered either by piston engines or by turboprop engines via a powerplant conversion program. During the 1970s, Antilles Air Boats[7][8][9][10][11][12] operated several different types of seaplanes in scheduled passenger service from the harbor as well including the Consolidated PBY Catalina (Super Catalina version), Grumman Goose, Grumman Mallard, Short Sandringham S-25 and Vought Sikorsky VS-44.