Following a question from @ShineThorin here is an explanation on what happened on Jun 23rd 🧶
The 🇺🇸US Navy regularly simulate the launch sequence of ☢️balistic missiles (SLBM) from a submarine (SSBN) at sea. All the information (targets, time of the attack, authentification...
The 🇺🇸US Navy regularly simulate the launch sequence of ☢️balistic missiles (SLBM) from a submarine (SSBN) at sea. All the information (targets, time of the attack, authentification...
..codes) needed for the launch is contained inside an Emergency Action Message (EAM), a short highly encrypted message broadcasted via a network called HFGCS that uses high frequency radio signal.
Fun fact, everyone can listen to those EAM, some people like @neetintel do an...
Fun fact, everyone can listen to those EAM, some people like @neetintel do an...
...impressive job collecting them, even if it's impossible to decypher them.
Let's go back to the transmission. High frequency radio signal can't go through water. Of course, that's a huge problem as the most important aspect of a SSBN mission is to remain undetected...
Let's go back to the transmission. High frequency radio signal can't go through water. Of course, that's a huge problem as the most important aspect of a SSBN mission is to remain undetected...
... so it's out of question to surface in order to "listen to radio".
Here comes the E-6B. It has two wire antennas, the longest being almost 8 km long. Through a complex maneuver, the aircraft relays the EAM transmitted via HFGCS to the submarine using Very Low...
Here comes the E-6B. It has two wire antennas, the longest being almost 8 km long. Through a complex maneuver, the aircraft relays the EAM transmitted via HFGCS to the submarine using Very Low...
...Frequency that can pierce through water. The transmission rate is VERY low, but the EAM are very short messages, most of the time a few dozens of characters (exceptionnally a couple hundreds).
You can read a very interesting article on how those EAM are processed once...
You can read a very interesting article on how those EAM are processed once...
...the SSBN crew receives it 👇
web.archive.org
To end this thread, let's go back to June 23rd events. As mentioned above, the US Navy crews regurarly practice those procedure, this is critical in order to ensure deterrence works at all time. What's less common is...
web.archive.org
To end this thread, let's go back to June 23rd events. As mentioned above, the US Navy crews regurarly practice those procedure, this is critical in order to ensure deterrence works at all time. What's less common is...
...to see this kind of training far from US shores.
Seeing a 🇺🇸 SSBN sailing quite close to Russia is a major show of force and shows US Navy's confident in its own power and ability to protect its SSBN against Russian attack submarines (SSN) whose one of the main mission is..
Seeing a 🇺🇸 SSBN sailing quite close to Russia is a major show of force and shows US Navy's confident in its own power and ability to protect its SSBN against Russian attack submarines (SSN) whose one of the main mission is..
...to track US SSBN.
But most of all, this exercise main goal is probably to demonstrate the US intend to protect its European allies against any threat, even if it means using its most deadly ☢️ tools.
And I must admit that's quite a convincing demonstration.
But most of all, this exercise main goal is probably to demonstrate the US intend to protect its European allies against any threat, even if it means using its most deadly ☢️ tools.
And I must admit that's quite a convincing demonstration.
This a quite a simplistic thread for a highly complex topic but this gives an idea on how things works.
Bonus: @neetintel recording on June 23rd.
⚠️ following EAM is definitely a rabbit hole 😅
youtube.com
Bonus: @neetintel recording on June 23rd.
⚠️ following EAM is definitely a rabbit hole 😅
youtube.com
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