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On a cold November morning, Straussler stood on the bank of a placid, man-made lake in Surrey. A Valentine tank, its canvas screen raised like the frill of a startled lizard, sat on the concrete ramp. The crew inside—three nervous volunteers—gave a thumbs up.
His assistant, a young Royal Engineer named Corporal Bill Jenkins, fished him out. "It's a coffin, sir," Jenkins said, shivering. dd tank origin
The tank rolled into the water. For a sickening moment, it listed to the left. The crew inside felt the cold seep through the hull. But then, the canvas billowed out, the air pockets caught, and the tank leveled. The little twin propellers bit into the water. Chugging like a tugboat, the Valentine moved away from the shore. On a cold November morning, Straussler stood on
He began with a Tetrarch light tank. His idea was simple but audacious: make a tank that could swim. Not float like a boat, but propel itself through the sea using its own tracks. The key was displacement. He bolted a rectangular, collapsible canvas screen to the tank's hull, held aloft by rubber tubes. When raised, the screen acted like the sides of a ship, pushing water away and allowing the 7-ton tank to bob just below the surface, with only a small air intake and an exhaust pipe visible. His assistant, a young Royal Engineer named Corporal
Straussler lit his pipe with a shaking hand. He gave the signal.
The rain over the River Thames was a persistent, needle-fine drizzle. In a rented hangar near the Hamble River, a Hungarian-born engineer named Nicholas Straussler watched a canvas screen sag under the weight of collected water. His overalls were stained with grease and river mud. It was 1941, and Britain was losing the war.
On a cold November morning, Straussler stood on the bank of a placid, man-made lake in Surrey. A Valentine tank, its canvas screen raised like the frill of a startled lizard, sat on the concrete ramp. The crew inside—three nervous volunteers—gave a thumbs up.
His assistant, a young Royal Engineer named Corporal Bill Jenkins, fished him out. "It's a coffin, sir," Jenkins said, shivering.
The tank rolled into the water. For a sickening moment, it listed to the left. The crew inside felt the cold seep through the hull. But then, the canvas billowed out, the air pockets caught, and the tank leveled. The little twin propellers bit into the water. Chugging like a tugboat, the Valentine moved away from the shore.
He began with a Tetrarch light tank. His idea was simple but audacious: make a tank that could swim. Not float like a boat, but propel itself through the sea using its own tracks. The key was displacement. He bolted a rectangular, collapsible canvas screen to the tank's hull, held aloft by rubber tubes. When raised, the screen acted like the sides of a ship, pushing water away and allowing the 7-ton tank to bob just below the surface, with only a small air intake and an exhaust pipe visible.
Straussler lit his pipe with a shaking hand. He gave the signal.
The rain over the River Thames was a persistent, needle-fine drizzle. In a rented hangar near the Hamble River, a Hungarian-born engineer named Nicholas Straussler watched a canvas screen sag under the weight of collected water. His overalls were stained with grease and river mud. It was 1941, and Britain was losing the war.