Charts. Trinidad Island. Island of Trinidad and eastern part of Gulf of Paria, West Indies and northeast coast of South America, from British surveys between 1866 and 1925, and surveys by U. S. S. Hannibal in 1931 and 1932, topography from map by Government of Trinidad and Tobago in 1926; chart 5586. Natural scale 1:175,000 at lat. 10°20′.