[R-390] OT: Submarine navigation

[Ben]

If you're talking 60-70's time frame then a pretty advanced INS .  WW2 they only stayed under water for a few hours and then in an attack.

Sent from my iPhone

> On Sep 9, 2014, at 7:40 AM, Blair Batty <blairbatty at gmail.com> wrote:
> 
> Sorry for the off topic, but I know there are lots of ex-military types
> here; I don't know where else to ask.
> 
> How did a submarine navigate during WW2? Did a compass work underwater
> inside an iron tube? Did they just look thru the periscope to see where
> they were going? Dead reckoning? Or were they mostly a surface vessel.
> 
> I suppose today they have all sorts of magic, electronic gps devices, so
> they can travel for months without every surfacing. But what was available,
> say in the 60's-70's?
> 
> Sincerely
> /b
> 
> Questions inspired by a cold war submarine movie last night...
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