Coasters Harbor Island

41°30′33.65″N 71°19′38.19″W / 41.5093472°N 71.3272750°W / 41.5093472; -71.3272750

Aerial photograph of Coasters Harbor Island, 1941
The Naval War College. The original Newport Asylum building can be seen on the far right, now housing the Naval War College Museum. The larger building on the left is Luce Hall.

Coasters Harbor Island is a 92-acre (370,000 m2) island in Narragansett Bay, Newport, Rhode Island. The island is home to the Naval War College (NWC), an education and research institution of the United States Navy that specializes in developing ideas for naval warfare and passing them along to officers of the Navy.