The submarine-like craft, left, was captured by the U.S. Coast Guard off the coast of Costa Rica in November 2006. Officers found some 3.5 tons of cocaine on board.
The vessel displayed on land, top right, was seen in the previous slide.
The blue craft, bottom right, was spotted 300 miles southwest of Guatemala by the U.S. Coast Guard in August 2007. An estimated three tons of cocaine was found on board. (DEA)