3 ms·
So does that mean USN ships are issued with a precision mechanical chronometer for longitude, like John Harrison's original marine chronometer that won the Roya
by fmajid 2y ago
So does that mean USN ships are issued with a precision mechanical chronometer for longitude, like John Harrison's original marine chronometer that won the Royal Navy's Longitude Prize?
- ls612 2y agoAn electric timekeeping device which is not networked would presumably be good enough for this purpose wouldn’t it? The concern is ewar not so much the ship not having electricity.
- fmajid 2y agoIn this application, I would also be concerned about resilience in the event of an EMP strike. Not sure a battery-powered quartz timepiece would survive such, even if it would survive a failure of the ship's electrical systems (not sure if that would matter, as I doubt the ship's propulsion could survive such).
- HPsquared 2y agoIf it doesn't require external communication, it's very easy to harden against EMP. Just put it in a Faraday cage.
- bodhiandphysics 2y agoyou can just put a quartz watch in a faraday cage. That'll be more accurate than any mechanical timepiece. Mechanical clocks have a nasty habit of breaking.