WSC was the call sign of Radio Corporation of America's (RCA) marine coast radio station located at first at Siasconset, Nantucket Island, Massachusetts USA and later near Tuckerton, New Jersey, in West Creek, New Jersey.
Station history
At first the station was owned and operated by the Marconi Company, later by American Marconi Company, and still later by Radio Corporation of America.
References
WSC (radio station) Wikipedia(Text) CC BY-SA