Excellent article on a subject that is in many forum threads/topics - well worth reading. [When the technology crutch is kicked - Splash247] ( When the technology crutch is kicked - Splash247 ) “senior officers are increasingly expressing unease about their junior colleagues’ fundamental navigation…

I’m on my way with a ship right now -

He was onboard when it happened Press said it was the second blackout the vessel had Suspect that the vessel will surge with faulty tension input to dp

L2 L5 got nothing to do with spoofing L2 is a signal on different frequency so via doppler shift you can work out how the signal was bent in the atmosphere. For whatever reason it is encoded but all 3rd party vendors decode and use it L5 signal not coded so civilian receivers can use it as you sa…

[image] powerabout: L2 is a signal on different frequency so via doppler shift you can work out how the signal was bent in the atmosphere. So is L5. [image] powerabout: For whatever reason it is encoded but all 3rd party vendors decode and use it I would need way more than you saying …

every vendors receivers have had that feature for decades.. Anyone with a DP ticket should know that Trimble, C-nav Fugro etc a cut and paste from Fugro features of various receivers: Trust but verify…. Seastar® XP3 Accuracy phase based service, using orbit/ clock data valid worldwide, based …

The decryption is not complex as explained to me by a receiver vendor and then later discovered its the same signal as L2C There are no secret signals coming out of navstar sats certainly nothing for accuracy. The big issues to deal with is the atmosphere interference and non symmetrical orbits wh…

Related thread: [image] Seamanship, Navigation, Piloting, Metis Techne Professional Mariner Forum From Seeing Like a State by James C Sott. [Seeing_Like_a_State] [image] [image] [image]

[image] MAK: The vast majority of the captains lecturing about the shortcomings of modern technology are unable to do so. This comes across as cope and insecurity. Usually because it is. It’s true that many ship’s officer of my age cohort don’t want to learn new skills so it’s become a stere…

Being of an age when ARPA and ECDIS among other things were thrown on ships before the legislation caught up the manuals were all we had. The Filipino electrician and I installed the AIS at sea.

When the technology crutch is kicked

Professional Mariner Forum

Capt_Phoenix November 19, 2025, 7:31am 71

L2C has been broadcast by every Navstar satellite launched since 2005…

Do you have any evidence that these vendors are decrypting the encoded military L2 channel like you claimed instead of using the civilian L2C?

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When the technology crutch is kicked

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