Hardcover Publisher: Oxford University Press. London, undated but 1941. No dustjacket.
159 pages with tables, and 10 figures, plus 23 plates with 30 black and white photos, & 1 folded chart of the Thames Estuary. Frontis illustrations of Queen Elizabeth liner leaving the Clyde and a sailing barge on the Thames. Decorated cloth front cover. Types & tonnage, propulsion, trade routes, navigation, etc. The Merchant Service at War.