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Old 04-15-14, 12:48 PM   #25
Joefour
Engineer
 
Join Date: Jan 2014
Location: At periscope depth in the Puget Sound
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Default Sub Noise

Quote:
Originally Posted by Paulebaer1979 View Post
Yes. But you will need a replikator for torps, harpoons and so on, too. And donŽt forget about the crew. YouŽll need some woman to replikate the crew

And all those engines and systems are the reason why a LosAngelos sub fresh out the shipyard (refreshment) had no chance against a 30 year old 206a in med sea 2002. We won 20 to 1. The one time they found us, we started to snorkel while the batteries were fully charged. We were able to detect the noise from reactor from greater distances as the LA could detect us - even when both subs cruised with speeds below 10kn.
What I find interesting is the detectable noise you say was coming from the powerplants. Many years ago I worked with my dad at a pump factory in the Los Angeles area. They did some DoD work, the majority of which was submarine main seawater pumps, which I think was for Electric Boat in Connecticut. I have no idea what class subs these pumps were for. I worked there from 1973 to 1978, if that helps. The thing is, the pumps were so quiet that they had to be tested outside at a special testing station away from the machine shop noise. What amazed me was that you could stand next to them and not even know they were running unless you put your hand on them and felt a very smooth vibration.
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