They were not really codes. It was a communications system for torpedo guidance that was resistant to enemy jamming. Bits of signals were sent over different frequencies.
She invented a secret communication system! Plus she was an actress. How awesome is that? For more reliable information, look her up. She was also dubbed the most beautiful woman in the world!
Torpedo Wold is World 6, and so to get there you must get to and beat world 5.
The deadliest torpedo of WWII was the oxygen fuelled Japanese Long Lance torpedo.
The Earliest Industrial Sewage system was developed and invented in twentieth century. This system is called Davyhulme Sewage Works, (the activated Sludge). This system was activated all over the world.
My grandfather said in 1942 the cost was $100,000 each. Because of the cost, they would recover torpedo's that were test fired.
They are supposed to have invented the banking system.
Patrol Torpedo Boat
According to my copy, "2112 Guinness World Records", the Russian VA-111 Shkval is the world's fastest torpedo with a top speed of 230 mph and a range of 4.2 miles. Of the other torpedo variants that I researched the top speed was around 60 mph making the Shkval almost 4 times as fast.
It was invented by Ray Tomlinson(Raymond Samuel Tomlinson)in 1971. Also the world's first integrated email system was invented by Dr. V. A. Shiva Ayyadurai from MIT. He designed the first email system in 1980.
Guglielmo Marconi
US Higgins and Elco were the largest builders.