[Silent Hunter UK]

Originally Posted by Targan

Another one I was reading just today:

http://rt.com/usa/238257-french-submarine-us-carrier/

It is generally the quieter diesel subs that are better at this sort of thing. Nukes, especially the earlier Soviet ones, could be very noisy due to the reactor; when an 'Alfa' powered up for the first time off Kola, SOSUS picked it up in Bermuda.