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New York: Warner Books, 1990. Presumed First Edition, First printing. Hardcover. 29 cm. Illustrated endpapers. 231,  pages. Illustrations (some in color). Color maps. Appendix. Sticker residue on front and back covers. Introduction by Ludovic Kennedy. Technical and Historical consultation by William H. Garzke, Jr. and Robert O. Dulin, Jr. Robert Duane Ballard (born June 30, 1942) is a retired United States Navy officer and a professor of oceanography at the University of Rhode Island who is most noted for his work in underwater archaeology: maritime archaeology and archaeology of shipwrecks. He is most known for the discoveries of the wrecks of the RMS Titanic in 1985, the battleship Bismarck in 1989, and the aircraft carrier USS Yorktown in 1998. He discovered the wreck of John F. Kennedy's PT-109 in 2002 and visited Biuku Gasa and Eroni Kumana, who saved its crew. He leads ocean exploration on E/V Nautilus.