Origin — Dd Tank

It worked.

Nicholas Straussler never saw the landings. He was in a workshop in Berkshire, covered in oil, already sketching a different kind of flotation device for a different kind of war. When the news came, he simply said, "Good. Now, about the problem of mud..." dd tank origin

The first test was a disaster. The canvas ripped. The tank took on water. It sank to the bottom of the Hamble River like a dead beetle. It worked