Not a book about our merchant marine exploits in the war, but a background for better understanding of newspaper reports, an account of global shipping in a global war, the problems of supplies, imports, exports, of troops and equipment, of commitments, of expanding the output of the nulls, of the reforms and accomplishments of the Maritime Commission, of the men and yards and builders behind emergency measures, of the officers of the ships and their training, new style. There is also a survey of the period of the Neutrality Act and what it meant to occan transportation, of submarine warfare and defense measures, of the Navy's needs and their share in protecting the merchant fleet, of convoys to strange ports and the trouble of loading and unloading, of typical ocean runs. There are sketches of the builders, the officers, the shipyards, now coordinated to the vital military operation of world wide shipping. Good factual book. Not an ephemeral contemporary record.