Aboard the quietest submarine in the world
 

Saw this future weapons bit on youtube, thought I would share:

http://www.youtube.com/watch?v=TfjYZUiOkUw

Why do all the components need to be a-magnetic?

Can't you just have a electrical degaussing system on?
Is that the same thing?
Do degaussing systems leave electromagnetic signals that can be picked up by ASW?

Please exscuse my ignorance.

I think degaussing is only an option on nukes due to the amount of power it takes, it wouldn't be an option when on batteries.