Hardcover w/DJ. 1958. The heroic story of two solo transatlantic trips. Hannes Lindemann (28 December 1922 – 17 April 2015) was a German doctor, navigator and sailor. He made two solo transatlantic crossings, one in a sailing dugout canoe made while working in Liberia and the second in a 17-foot Klepper Aerius II double folding kayak, modified to carry two masts and an outrigger. His book Alone at Sea documents the trips, which were totally unassisted.