It is located in the southwestern quadrant of the Gulf, and was named for Captain Charles Dwight Sigsbee, the captain of the USS "Maine", which exploded in the harbor of Havana, Cuba, in 1898.
It is located in the southwestern quadrant of the Gulf, with its closest point to the U.S. coast at southeast of Brownsville, Texas. He would later be captain of the USS "Maine", which exploded in the harbor of Havana, Cuba, in 1898.