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Originally Posted by Tachyon
1) a)Why are diesel engines used by Submarines on the surface? Why not Electric?
b)Again, why electric underwater...why not diesel?
2) Can ships use Electric engines? (WW2 era)
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Q1a: Because diesel engines (in WWII era) is capable to generate a large power for a huge U-boat
Q1b: Diesel engines burns diesels to generate power. Oxygen is used as a result
If it operates underwater, it draws oxygen from the boat and give out carbon dioxide (and even poisonous carbon monoxide due to insufficient air supply)
As a result, the crews will ... die
Q2: Yes, but practically impossible since no electric engine has been made to let a heavy merchant ship to cross Atlantic (due to lack in power and endurance)