Empire ship the Normandy invasion depended on the successful construction of the Mulberry ports. These were prefabricated ports, constructed at Southampton, Gosport, Portsmouth, Tilbury Docks, and even as far north as Birkenhead and Hartlepool. Two hundred tugs then took three months to tow the components of the harbours from where they were constructed to assembly areas on the South Coast. Between 7 June 1944 and the end of July, the tugs towed the materials across the channel to Normandy. Before D-Day, sixty old merchant ships and four old warships were selected as blockships, to be scuttled in a line to give protection
International Convention to Facilitate the Importation of Commercial Samples and Advertising Material International Convention to Facilitate the Importation of Commercial Samples and Advertising Material The International Convention to Facilitate the Importation of Commercial Samples and Advertising Material is a 1952 United Nations multilateral treaty. States that ratify the treaty agree to allow product samples and advertising material into the county duty-free. The Convention allows the duty-free importation of commercial samples that are determined to be of "negligible value". It also allows the duty-free importation of advertising material such as catalogues, price lists, and trade notices. The Convention was concluded in Geneva on 7 November 1952. It was signed by six states and