Corrected entry: A submarine's propeller is made for propelling it through water, not air. Activating the engine while the submarine is propped up on land will not cause it to move.
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Correction: They got the submarine up there in the first place by a dry dock, Cipher would be sure to hack that as well. I don't know what the point of turning the engine on in the air was, maybe just to verify that it works, but very quickly the engine would overheat with no water coolant.