Given that propellers are moved by shafts connected to motors within the body, wouldn’t the interface of these shafts with the shell of the vehicle be a weak point? How do they waterproof and pressure proof those joints?
In: 4
Yes, it is a weak point. There are seals in place around the shaft that minimize the leakage. There are pumps on the inside of the sub that pump the water back out to the sea.
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