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TinWing said:
There’s also nothing to say that a submarine has to actually be underway during a deterrent patrol. A while back, photos of the marine growth on the hull of a certain non-Russian, Non-America, Non-Chinese, Non-French, Non-Indian, third party SSBN proved that it had been sitting stationary, underwater, for months on end during a deterrent patrol. It goes to show that established nuclear powers can use SSBNs as stationary missile launching barges. The high specific heat of water means that a stationary SSBN on the bottom in a protected “bastion” safe from enemy SSNs is a lot less vulnerable than any concrete ICBM silo.
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So the RN had their SSBN essentially lay in "ambush" for the majority of it's deterrence patrol? Interesting but certainly also sensible. Now though, how would the submarine receive it's launch order when it's at the bottom of the seafloor?
 
TinWing said:
There’s also nothing to say that a submarine has to actually be underway during a deterrent patrol. A while back, photos of the marine growth on the hull of a certain non-Russian, Non-America, Non-Chinese, Non-French, Non-Indian, third party SSBN proved that it had been sitting stationary, underwater, for months on end during a deterrent patrol. It goes to show that established nuclear powers can use SSBNs as stationary missile launching barges. The high specific heat of water means that a stationary SSBN on the bottom in a protected “bastion” safe from enemy SSNs is a lot less vulnerable than any concrete ICBM silo.
Click to expand...
Combined response
EmoBirb said:
So the RN had their SSBN essentially lay in "ambush" for the majority of it's deterrence patrol? Interesting but certainly also sensible. Now though, how would the submarine receive it's launch order when it's at the bottom of the seafloor?
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There are radio waves that penetrate the water pretty well. But the fact that it was covered in green means that the sub wasn't on the bottom, but was within the sunlit band. Less than 100m down.

I suspect that the sub was just poking along at about 4-5 knots indicated, bow on into the current and going roughly nowhere. "Four knots to nowhere" is the name for that style of operating.



TinWing said:
Or maybe the Indian concept of a ballistic missile adapted to drop a lightweight torpedo is actually a good idea?
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High power ASROC. And yes, it is a good idea. Not sure the 650km range is necessary, but something with a couple hundred km of range would be really good.
 
RN Deterrent awaits a signal or a lack of signal.

Signal is normally "all is well" or "change target list to x"
If no signal then open Letter of Last Resort.
 
There are a number of potential mechanisms of communication. VLF, communication buoy, acoustic signals. If you one held still in a specific spot, it is probably a lot easier to make submerged communications work.
 
Russia lays keel of ninth Yasen-M nuclear attack submarine
https://defence-blog.com/russia-lays-keel-of-ninth-yasen-m-nuclear-attack-submarine/
Key Points
  • Russia laid the keel of nuclear submarine Murmansk, the ninth Project 885M Yasen-M boat, at Severodvinsk on June 17, 2026, the first in six years.
  • The ceremony was attended by Russian Navy Commander-in-Chief Admiral Alexander Moiseyev and United Shipbuilding Corporation Director General Andrei Puchkov.
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The class carries a formidable weapons load centered on the Kalibr land-attack cruise missile, which has a stated range of approximately 2,500 kilometers (1,553 miles) in its naval variant and has been used extensively against Ukrainian targets since 2022, along with the P-800 Oniks anti-ship missile and, in the most recent boats, the Zircon (sometimes written as Tsirkon) hypersonic cruise missile. The submarines are designed to hunt enemy surface ships and submarines, conduct long-range strikes against land targets, and gather intelligence, making them genuine multi-mission platforms rather than single-role weapons.
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TinWing said:
There’s also nothing to say that a submarine has to actually be underway during a deterrent patrol. A while back, photos of the marine growth on the hull of a certain non-Russian, Non-America, Non-Chinese, Non-French, Non-Indian, third party SSBN proved that it had been sitting stationary, underwater, for months on end during a deterrent patrol. It goes to show that established nuclear powers can use SSBNs as stationary missile launching barges. The high specific heat of water means that a stationary SSBN on the bottom in a protected “bastion” safe from enemy SSNs is a lot less vulnerable than any concrete ICBM silo.

Or maybe the Indian concept of a ballistic missile adapted to drop a lightweight torpedo is actually a good idea?
Click to expand...
The Indian concept of a torpedo on a ballistic was neccesary because of the vast distances of the chokepoints in the IOR from the mainland the need to hit subs at that distance if they're detected using MQ9s or P8Is. It allows you to use networked assets far away from a ship/carrier. It will suit India but Idk if it will suit other countries. Maybe China?
 

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