USS Long Island explained

Three ships of the United States Navy have been named USS Long Island, after Long Island, New York.

• was a steam trawler purchased by the US Navy 18 April 1917 and sold 1 December 1919
• was a launched 11 January 1940 and sold 24 April 1947
• will be a expected to enter service at an unspecified date.

One ship of the United States Coast Guard was also named USCGC Long Island, also after Long Island, New York.

• , an in service from 1991–2015. She is now in service with the Costa Rican Coast Guard as Juan Rafael Mora Porras.