E-Boats were German versions of the American PT boat. They were a little faster at 50 knots and could travel much farther, 700 miles. In 1944, a squadron of E-Boats came across undefended American and British troops practicing for D-Day and launched an attack, killing 1000 American soldiers and a few Brits. In 1956 the British used captured E-boats manned by the same German crews to launch spy missions against the Soviet Union. No E-boats survive today but they were a masterpiece of design.