Realised that most modern submarines (and some aircraft carriers) use nuclear power, but destroyers and frigates don’t. I don’t imagine it’s a size thing, so I’m not sure what else it could be.
In: Engineering
Well, there are 2 other options: diesel fuel, or batteries.
How exactly do you expect a submarine to burn diesel, at depth, for days, weeks, or months on end?
Similarly, batteries are able to last at most, a few hours. Certainly not days or months.
So, that leaves, nuclear power.
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