 Complete the following phrase:  Harling, a keen amateur sailor, volunteered for the Royal Navy. Before he finished training, under the legendary Captain O. M. Watts, he found himself at Dunkirk in charge of a whaler. Sub-Lieutet Harling, RNVR, next found himself navigator of a corvette, on convoy duty in the Western Approaches. This led him to write The Steep Atlantick Stream, published by Chatto  Windus in 1946, based on his experiences in the North Atlantic and 