Posting from 35,000 feet...

[FoBoT]

On phones?

probably not, the ones used on nuclear submarines are big

but in theory it could probably be done , not with great accuracy perhaps

 

[GodlessAstronomer]

probably not, the ones used on nuclear submarines are big

but in theory it could probably be done , not with great accuracy perhaps

That's pretty damn cool :awe:

 

[FoBoT]

That's pretty damn cool :awe:

this is what was on the submarine i served aboard
http://www.lockheedmartin.com/products/TridentSonarDefensiveWeaponSystemNa/index.html

The navigation system on the Trident submarine is the most accurate inertial navigation system ever produced, capable of precisely locating the submarine's position for pinpoint firing of the nuclear-armed ballistic missiles, as well as for platform navigation and guidance. Upgrades infuse the latest electronics technology to improve performance, reduce life cycle costs and provide passive navigation capabilities. Passive navigation uses gravity sensor systems for navigation and terrain estimation for covert submarine operations.

Trident D5 SSBN employs the AN/BQN-25 Navigation Sonar System as an aid to inertial navigation. Over long periods of operation, the SSBN Inertial Navigation Systems (INS) requires external position resets to correct errors. The NSS provides a position correction by performing a technique called bathymetric fix. This is a map-matching process wherein previously surveyed areas called Precise Bathymetric Navigation Zones (PBNZs) are traversed while the sonar convertly pings the bottom.

 

[joesmoke]

please ignore the tiny demon on the wing tampering with the engine...

 

[LTC8K6]

Pretty much all modern airliners use inertial reference for precise guidance.