Caribbean Sea attracted pirates such as Samuel Bellamy and Blackbeard. The International Hydrographic Organization defines the limits of the Caribbean Sea as follows: Note that, although Barbados is an island on the same continental shelf, it is considered to be in the Atlantic Ocean rather than the Caribbean Sea. The Caribbean Sea is an oceanic sea largely situated on the Caribbean Plate. The Caribbean Sea is separated from the ocean by several island arcs of various ages. The youngest stretches from the Lesser Antilles to the Virgin Islands to the north east of Trinidad and Tobago off the coast of Venezuela. This
Coast Guard Island Naval Engineering Support Unit Alameda (NESU Alameda were also located on the island until those units were decommissioned in 2013. The functions and capabilities of the units remain as departments within Base Alameda. The facilities on Coast Guard Island also include an industrial service center, enlisted barracks, a medical and dental clinic, and public works facilities to service the island. Originally known as Government Island, this artificial island was formed in 1913 by the dredging project that extended the Oakland Estuary to San Leandro Bay. The Coast Guard first came to the island in 1926 when it established "Base 11"