Mass Market Paperback. The story of the Wahoo, the USA's most "daring"WWII submarine as told by the only survivor of its crew. Foreword by Vice Admiral Charles A. Lockwood. Tight binding with clean pages and no writing inside. Back cover and last ten or so pages have a 5" crease. There is also some rubbing damage along the spine and the edges of the cover. Great for fans of WWII naval history.