Reply to post: Re: And the navigation systems for those Trident/Poseidon missiles?

US Navy grabs old-fashioned sextants amid hacker attack fears

Anonymous Coward
Anonymous Coward

Re: And the navigation systems for those Trident/Poseidon missiles?

But the starting point for the INS is based on GPS.

That was the original purpose of the USN forerunner to GPS - to give a sub a good known starting point without it having to surface off Murmansk and wait for enough clear weather to get a fix

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