Nuclear submarines should always have two sources of power for their reactor cooling pumps, one in use, and a backup. These can be Steam, (not available when shut down in harbour), Diesels, The submarines batteries, Shore power, (national grid), plus an emergency system using seawater if the submarine is afloat, this can be supplied from ashore if the submarine is in dry dock. I very much doubt if all these failed, The people who make the most noise about nuclear problems usually have the least knowledge.
Last edited by: Old Navy on Sun 6 Oct 13 at 22:01
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