Naval Weapons Station Earle is a United States Navy base in New Jersey. Its distinguishing feature is a 2.9-mile pier in Sandy Hook Bay where ammunition can be loaded and unloaded from warships at a safe distance from heavily populated areas.
The station is divided into two sections: Mainside, located in parts of Colts Neck Township, Howell Township, Wall Township, and Tinton Falls at 40°15′00″N 74°09′00″W / 40.25000°N 74.15000°W; and the Waterfront Area (which includes the pier complex), on Sandy Hook Bay, located in the Leonardo section of Middletown Township, at 40°24′30″N 74°04′30″W / 40.40833°N 74.07500°W. The areas are connected by Normandy Road, a 15-mile (24 km) military road and rail line.
World War II operations demanded an ammunition depot near the greater New York metropolitan area but away from high-population sectors. Planning was hastened in early 1943 after the ammunition ship SS El Estero caught fire while moored in Bayonne, New Jersey. If the stowed and dockside explosives had detonated at once, in the manner of the great Halifax Explosion, the blast could have damaged parts of Bayonne and even Lower Manhattan. A board was established to locate a suitable site, and chose Sandy Hook Bay, which featured a safe, sheltered, and nearby port where ships could take on ammunition. Rail lines could bring in the ammunition from the west, where the majority of ammunition shipments originated. The rural area meant few local residents would be affected.