First EditionManual of Instructions for Operating the Ballasting Control System Tank Landing Craft. Robert Garrels. Gibbs & Cox Inc: New York, 1943. Three volume vintage carbon copy of report sewn into black cloth ribbing at fore-edges, attached at gutter. Measures 8.5 x 10.75 inches. 28 pages. Includes 1 large folding ballast chart. A scarce original report for Dock Landing Ships used in World War II as artillery transport. Two of the reports include extensive diagrams showing the ballast system designed to flood their well decks, lower the stern gate to the sea, and disembark craft and vehicles for assaults on hostile enemy beaches. Several special purpose versions were created for use during the Normandy landings. Codenamed Operation Neptune and referred to as D-Day, it was the largest seaborne invasion in history. The operation began the liberation of western Europe and laid the foundations of the Allied victory on the Western Front. Some of the landing craft had been modified to provide close support fire, and self-propelled amphibious Duplex-Drive tanks (DD tanks), The technology proved additionally useful for offshore repair docks. Utah Beach was defended by two battalions of Grenadier Regiment. Members of the 8th Infantry Regiment of the 4th Infantry Division were the first to land, arriving at 06:30. Their landing craft were pushed to the south by strong currents, The initial assault battalions were quickly followed by 28 DD tanks and several waves of engineer and demolition teams to clear the area directly behind the beach of obstacles and mines. Gaps were blown in the sea wall to allow quicker access for troops and tanks. On Utah Beach they landed 21,000 troops at the cost of only 197 casualties. This scarce manual is overall in very good condition with some light sunning, does not affect text.