Edited sentence: , watch-standers) were required to be U.During the 1940-1955 period; the United States Navy and the nation’s Merchant Marine dominated the seas, carrying goods largely, but not entirely, of American manufacture to every part of the world.Furthermore, the act established procedural requirements for the treatment of injured crew members and the related right to institute civil proceedings against employers for injuries sustained as a result of negligence on the part of owner, captain or crew.In addition, all licensed shipboard personnel (i.The Merchant Marine Act of 1920 , popularly known as the Jones Act, provides that vessels engaged in United States intra-coastal trade—to wit, vessels going from one U.This accomplishment stands as a monument to the supreme effort of hundreds of thousands of dedicated American workers.This predominance grew out of both the massive shipbuilding effort of the Second World War and the collapse of such production by many of the world’s industrial nations during that same period.port (including Alaska, Hawaiian Islands, and dependencies such as Puerto Rico)—must be constructed in the United States, have American corporate owners, and the U.port directly to another U