History of the North Sea great herring fishing industry resulting in Scotland becoming a European leader in that industry. During the First Schleswig War (1848–51), the Crimean War (1854–56) and the Second Schleswig War (1864), belligerents took steps to reduce or eliminate commerce in the North Sea by their enemies. In the first Schleswig War, Denmark was able to halt maritime commerce by Germany in the North Sea and in the second, imposed tolls on ships crossing through the Danish straits between the Baltic and North Seas. The Crimean War saw British and French expeditions sent into the Baltic to prevent Russian ships' egress into
Action in the North Atlantic Action in the North Atlantic Action in the North Atlantic (also known as Heroes Without Uniforms) is a 1943 American black-and-white war film from Warner Bros. Pictures, produced by Jerry Wald, directed by Lloyd Bacon, that stars Humphrey Bogart and Raymond Massey as sailors in the U.S. Merchant Marine during World War II. Typical of other films in the era, "Action in the North Atlantic" was created as a morale boosting propaganda film. As noted by film critic Bosley Crowther, "... it's a good thing to have a picture which waves the flag for the merchant marine. Those boys are