Edition: First US printing.
New York: The Viking Press, (1963.) dj. Hardcover first edition - A sea-going adventure story, based on an actual plot in 1920 when a group of nationalists in Brittany were dreaming of separating from France and joining with Ireland and Wales in a pan-Celtic empire. Translated from the French by Xan Fielding. Originally published in France in 1961 as La Prison Maritime. Winner of the 1962 Grand Prix du Roman de L'Academie Francaise. 286 pp.
Condition: Near fine in very good dust jacket (small spot on title and dedication page, but otherwise a very tight and clean copy, some edgewear to the dj, including a tear with associated creasing on the back cover.)