Dd Tank Origin ((install))

The design was rushed into production. The "DD"—standing for "Duplex Drive"—was born. But the true test was yet to come. On June 6, 1944, at 5:30 AM, off the coast of Normandy, the sea was brutal. Six-foot swells swallowed small craft whole. Many DD tanks, launched too far from shore in the chaos, were swamped and sunk. At Omaha Beach, nearly all of them were lost.

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The U.S. 70th Tank Battalion launched its DD tanks 3,000 yards out. The sea was relatively calm. All 28 tanks swam ashore, losing only one to an underwater obstacle. They arrived dry and combat-ready, clearing bunkers and paving the way for the 4th Infantry Division. Casualties were minimal. The DD concept worked. The design was rushed into production

The problem was beaches. Any invasion of Nazi-occupied Europe would require landing tanks directly onto shore. But landing craft couldn't get close enough without being blown out of the water. Tanks launched too far out simply sank like stones. On June 6, 1944, at 5:30 AM, off

The term "DD Tank" stands for "Duplex Drive," but to the men who operated them and the infantry they supported, they were known as "Donald Ducks." These were tanks that could swim—amphibious armored vehicles designed to launch from ships miles offshore and "swim" through the churning English Channel to support the first wave of infantry.

Upon reaching shallow water, the driver engaged track propulsion. Once on dry land, the canvas skirt was rapidly collapsed or dropped using small explosive charges, allowing the tank to immediately fire its main cannon. REME History: DD Tanks