This article originally appeared at hisutton.com
The Russian Navy recently launched its 4th Pr.0955 BOERI Class ballistic missile submarine (SSBN), Count Vladimir (Князь Владимир). It was the first of the improved Pr.0955A (aka 09552) BOREI-II sub-variant.
Original artwork – CLICK for HIGH-RESOLUTION image.
The most visible difference from the baseline Pr.0955 is the western-style all-moving vertical rudders with endplates added to the hydroplanes. The towed sonar array tube has been moved from the top of the upper vertical rudder to the starboard side hydroplane:
Another update is what appears to be a new flank array sonar running along the length of the missile compartment. This is likely a cylindrical tube buried in the double-hull:
The ‘hump back’ covering the missile compartment has been faired in to present a smoother and more angled cross-section. This may slightly reduce active sonar returns. Despite reports that the missile load would be increased to 20, it appears to remain 16 RSM-56 Bulava SLBMs. This will require much clearer photographs to confirm however:
Note that on at least one of the origial Pr.0955s the missile hatches themselves do not line up exactly with the hatch covers visible on the side of the submarine. There are however 16 tubes in two closely-packed sets of 4×2.
Images of the full sail are not yet available but it appears to be largely unchanged from the earlier model:
Original artwork – CLICK for HIGH-RESOLUTION image.
Work continues on four more Borey-A submarines:
1. Count Oleg
2. General Suvorov
3. Emperor Alexander III
4. Count Pozharsky
The BOREI Class inherits 6 x 533mm (21″) external torpedo tubes in the bow which are used to house decoys. This was inherited from the two Pr.971U AKULA-II and one Pr.971M AKULA-III Class attack submarine which were cannibalized for the bow sections of the first three BOREIs. It is not clear whether the new BOREI-II will retain this:
Additional Intelligence – Belgorod
During the launch ceremony, cameras were not allowed behind a large screen set up at the front of the construction hall. The likely reason for this was to prevent other submarines currently under construction from being photographed. Despite this effort, some details of the tail-end of a large submarine can be seen behind the screen. These are possibly the Pr.09852 Belgorod which is a much more sensitive project than the new SSBN.
Hey thats pretty cool about the towed sonar array placement, however, wouldn’t this affect maneuverability as the ship would be more inclined to go straight(due to the extra vertical elements)?
In all likelihood the effect this placement has is negligible in terms of hydrodynamics or affecting its manoeuvrability. If the array was larger sure, but at this size no..
add to that that when the towed sonar is deployed the submarine isn’t moving at very high speeds
In the last article I noticed that the propulsion (or propeller) of the sub is hidden, so I searched a bit and found exactly nothing! To me it looks like a ducted propeller or a waterjet. Anyway, it must be something new and important that requires hiding, I doubt that they bother to hide a ducted propeller when the structure of the fins, the sail, the torpedo and missile tubes and… are clearly visible.
Would you be surprised if they invented something like their jets’ thrust vectoring into their submarines?
Pump-jet propulsors. It is fairly common for nuclear submarines to have them as they are much quieter. Here is a photo of a Virginia class sub. Its propulsor is covered too. http://www.jeffhead.com/usn21/nssn-09.jpg
As I remember, first pump-jet propulsion system has been introduced on B-871 Alrosa, Kilo class submarine commissioned in 1990 (first picture): https://uploads.disquscdn.com/images/aaf36ad8967d24cd4e5a0078568e0fb41249a96f7d7fb10d9f6880509c897f50.jpg Here is the picture of pump jet propulsion system on Borei (2nd picture): https://uploads.disquscdn.com/images/6792479b592f46593db286551d9bd1b4da242a0601daa30189acae2fdb335d22.jpg
ayatollah, you want to steal for iran? :))
Alas, I can’t. They were clever and hid it. :(
Maybe I can ask them nicely and they give me the secret? Like I did with Shkval?
yup. compare with yankee submarine. they have fitted cover, ruskies glued together some cartoon boxes :DD this is typical russia. primitive bolshaya tyechnyika :DDD
Doesn’t matter. The glued box did it’s job fine and didn’t let prying eyes to see anything. I bet that American “fit” cover costs the US taxpayers thousands dollars, while Russians achieved the same effect by a few bucks.
I’m sure you heard the story about the Americans’ orbit pen and the Russian pencils.