SSGN thread (Ohio, Oscar and other dedicated SSGNs)

[FORBIN]

In 2014 active classes by countries :

USA : 58
Seawolf, the best : 3
Virginia : 10
Los Angeles : 41 which 22 688i better
Ohio SSGN : 4 carry 154 CM !
Look also http://www.sinodefenceforum.com/wor...nia-class-nuclear-attack-submarines-6202.html and in Members' Club Room several nice models do by Jeff.


RUSSIA : 22
( some in reserve difficult for know exact number in service )
Yasen : 1 the more recent
Akula I/II : 8 ( 6 + 2 )
Sierra I/II : 3 ( 1 + 2 )
Victor III : 4
Oscar II : 6

UK : 6
Trafalgar : 4
Astute : 2

FRANCE : 6
Rubis : 6

CHINA : 5
Type 091/Han : 3
Type 093/Shang : 2

 

[FORBIN]

Re: SSN and SSGN nuclear attack submarines

More powerful : about 50 weapons Seawolf, Yasen and Oscar but Seawolf can launch all the different types of weapons with its big TLT, 660 mm, more polyvalent.
Oscar special build as US CV killer with 24 big SS-N-19. Ohio also used for land attack with 154 CM ! with 13 torp but only for self defense.

More quiet : Seawolf a little less Virginia/Astute all get pump jet, Yasen ? but yet don' t get pump jet.

Sonar : US SN always have the best.

Speed : Seawolf about 40 kn max.

Depth : Seawolf operationnal 600 m but all sub can go up to about 20/30 % more than this operationnal limit.

Comparison for length and height for width Oscar II unusual 18+ m ! for use very big SS-N-19

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[FORBIN]

Re: SSN and SSGN nuclear attack submarines

Navy to Commission Submarine North Dakota

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11th Virginia, on the first 10 : 7 homeported to Groton and 3 to Pearl Harbor.

US SN/SSGN
View attachment 10568

Los Angeles are the most numerous, on 62 build 41 remains in service : 11 LA ( 31 build ) + 8 LA with VLS + 22 ( 23 build ) 688i more quiet, new sonar and VLS.

In few weeks La Jolla decommissioned and in 2015 Norfolk finaly Dallas announced would be retired in 2014 remain in service for further 3 years.

 

[Jeff Head]

Re: SSN and SSGN nuclear attack submarines

Navy to Commission Submarine North Dakota

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11th Virginia, on the first 10 : 7 homeported to Groton and 3 to Pearl Harbor.

US SN/SSGN
View attachment 10568

Los Angeles are the most numerous, on 62 build 41 remains in service : 11 LA ( 31 build ) + 8 LA with VLS + 22 ( 23 build ) 688i more quiet, new sonar and VLS.

In few weeks La Jolla decommissioned and in 2015 Norfolk finaly Dallas announced would be retired in 2014 remain in service for further 3 years.

Forb, we have a Virginia Class sub thread where announcements about its commissioning and news should be posted.

We have not had an SSGN thread, and we do not have a thread for the older SSN classes.

I will rename this thread to be a SSGN thread exclusively, and will create an older SSN thread to include the older classes, which will include the LA, Sea Wolf, Trafalger, Akula, Sierra, Victor, Rubis, etc. Older, but still operational classes of SSNs.

 

[FORBIN]

Well but this thread for only 2 classes seems short, i think more interesting/easy for read/understand regroup all non Chinese SSN/SSGN with also future Barraccuda.

You see.

 

[Jeff Head]

Well but this thread for only 2 classes seems short.

Yes, the Oscars and the Ohios are the only true SSGNs out there and will probably remain that way.

But there is a lot to talk about for both classes. They are both very capable classes of vessels. Four Ohio SSGNs and five active Oscars (I believe).

K-119 Voronezh Commissioned December 29, 1989 Active, after 2011 overhaul
K-410 Smolensk Commissioned December 22, 1990 Active, after 2013 overhaul
K-456 Tver Commissioned August 18, 1992 Active
K-266 Orel Commissioned December 30, 1992 Active, but being overhauled
K-186 Omsk Commissioned July 20, 1996 Active, after 2008 Overhaul

Ultimately, the Flight V Virginias, with their 40 missiles will be true SSN/SSGN hybrids and the Russian Yasen class already is.

Having a separate SSN thread for the older classes allows them to be talked about and compared as a class, and there are quite a few of those. The SSGN fulfills a completely different role. That is why I split them.

 

[Scratch]

Although carrying the same designation, especially Oscar and Ohio subs are really different in missions, however.

I believe the Oscars, to this day, continue their sole role as SAG / CVBG killers with anti sub or heavy anti-ship missiles. Those 24 P-700 are quite a massive punch to be thrown at a target.
The Ohios on the other hand are perhaps the "small scale", but stealthy, version of the arsenal ship idea, capable of (partially) overwhelming land based defenses with swarms of LACMs.
The Yasens seem to be the first subs having true multirole SSGN capability within their hybrid SSN/SSGN role, using the multimission Klub missile.
The Block V Virginias may go there, too should they also field the new LRASM in their VPMs.

 

[FORBIN]

Oscar II

Yes, the Oscars and the Ohios are the only true SSGNs out there and will probably remain that way.

But there is a lot to talk about for both classes. They are both very capable classes of vessels. Four Ohio SSGNs and five active Oscars (I believe).

K-119 Voronezh Commissioned December 29, 1989 Active, after 2011 overhaul
K-410 Smolensk Commissioned December 22, 1990 Active, after 2013 overhaul
K-456 Tver Commissioned August 18, 1992 Active
K-266 Orel Commissioned December 30, 1992 Active, but being overhauled
K-186 Omsk Commissioned July 20, 1996 Active, after 2008 Overhaul

Some overhauled named project 949 AM

Further modernization of existing units is undertaken by the Rubin Design Bureau, and is accepted 2 December 2011. Under the possible name of 949AM2 project, it consists in replacing the P-700 Granit missile missiles P-800 Oniks, missiles that are installed in the same containers, with a boarding Klub-S missiles in parallel, like what is done on the project 885. the K-410 Smolensk is the first to undergo modernization at the Zvezdochka shipyard. Zvezda shipyard should perform these operations for the Pacific Fleet stationed units.

can be replaced a Granit missile by three Oniks or four Kalibr.

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Their reactor get a life of 50000 h, 6 years.

Pacific Fleet get 3 units in service homeported to Vilyuchinsk, 10th Sub Div ( get also 3 Akula I ) Tver, Tomsk, Omsk

Northern Fleet get 3 units in service homeported to Zaozersk/Zapadnaya Litsa 11th Sub Div ( get also Severodvinsk and 2 Victor III )
Voronezh, Smolensk, Orel.

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[FORBIN]

Although carrying the same designation, especially Oscar and Ohio subs are really different in missions, however.

I believe the Oscars, to this day, continue their sole role as SAG / CVBG killers with anti sub or heavy anti-ship missiles. Those 24 P-700 are quite a massive punch to be thrown at a target.

Exact heavy anti-ship missiles in fact a monster as also SS-N-3/12 but he last better electronic leader missile guide all the burst and if it is destroyed another replaces, unusual system

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One attack against a US CV would have involved several Oscar, Echo II or others SSGN/SSG with Tu-16/Tu-22M about 100missiles and that is counter this saturating attacks that the AEGIS system was built one ships with it can engage about two or three times more targets simultaneously as more old CG to make simple, in general 2 by CVBG.

It is also noteworthy that new AShM Brahmos in fact a SS-N-26 update more accurate seems despite the improvements are much less powerful as SS-N-3/12/19, AS-4/6 warhead max 300 kg others 7500/1000 ... and for range also new max 300 km Soviet about 500 as Tomahawk AShM then LRASM which is the only new missile built before 20+ years to have a very long range allows a much more effective attack against CV which get a big escort ofc but mainly figters in CAP with E-2 protect at same range about.

The Ohios on the other hand are perhaps the "small scale", but stealthy, version of the arsenal ship idea, capable of (partially) overwhelming land based defenses with swarms of LACMs.
The Yasens seem to be the first subs having true multirole SSGN capability within their hybrid SSN/SSGN role, using the multimission Klub missile.
The Block V Virginias may go there, too should they also field the new LRASM in their VPMs.

No Klub/SS-N-27 Sizzler is not multimission. But difficult with Klub falily for know :

3M54E / P-900 Alfa / Klub-S Submarine-launched Anti-Ship missile subsonic
3M54E1 / P-900 Alfa / Klub-S Submarine-launched Anti-Ship missile supersonic

3M54TE / P-900 Alfa / Klub-N Ship-based vertical launched Anti-Ship missile subsonic
3M54TE1 / P-900 Alfa / Klub-N Ship-based vertical launched Anti-Ship missile supersonic

Supersonic get a warhead more small because carry more fuel to go to this speed then less space and a warhead more small.

3M14E / P-900 Kalibr Land-attack cruise-missile and 3M14EE/TE / P-900 Kalibr almost identical except FRAG-HE or submunitions for warhead.

One other ASW but i presume no in service actually 91RE1 Biryuza/91RE2 Biryuza almost identical also.

Russian media brag particulary Russia Novotsi Kaliber get a range of 3000 km ! absolutely wrong, 275 km.

Take a look in PDF, 2005 but great !

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[FORBIN]

949AM also named Oscar III, 949A modernised, mainly :

P-700 Granit [3M45] are replaced by Kalibr-PL pair [3M14] / Oniks [3M55, also known as the Yakhont] with 4 or 3 Kalibr missiles 3M55 missile tube
NB: 65-76 torpedo is not embedded since the disaster of the K-141 Kursk.
The torpedo tubes use a new system of pneumatic hydraulico launch for firing in bursts. Automatic management of the position of reserve torpedoes on storage racks is changed. The facility is suitable for firing at any depth, taking into account in particular the hull deformations caused by the pressure and the value of the pressure for the launch system.

Torpedo Type 65 is very big the more with DST-90/96 with a long range build in the 1980's in particular for attack US CAG do 4T, warhead 900 kg, DST-90/96 "only" 500 kg ! range max 100 km, 30kn or 50/50 have need 650 mm TLT, for comparison US MK-48 1.6 T, warh 300 kg, 50 km/40 kn.
Responsible for the Kursk destruction in 2000 also at this time VMF units lacked much maintenance Russia was at its lowest after energy price increased and help Russia.

Three 949AM planned modernisation lasts about 3 years :
K-266 Orel NF, Zvezdochka Shipyard to Severodvinsk in progress seems
K-132 Irkutsk PF, Zvezda to Bolshoy Kamen planned
K-442 Chelyabinsk PF, Zvezda to Bolshoy Kamen would have started
A 4th planned

Presumably RCOH the 2 reactors get a life of 6 years.

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