Periscope view

[Metak]

http://www.guardfish.org/missions/missions.html

[AVZ]

FIRE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! p-)

[FinnishMF]

http://www.guardfish.org/Delta%201%20(2).JPG

Which missile subb is this ?

[Frens]

russian?

[Vextra]

like written on the site, I would say Russian Delta I SSBN

[Apogee]

http://www.webmutants.com/strategypage/bear_sub1.jpg

http://a.abcnews.com/media/World/images/ap_polar_bear2_030530_nh.jpg

Some more periscope pictures.

[Mr. Nielsen]

Here is a periscope picture from a danish submarine. I believe the picture is taken during a NATO exercise. Meaning that the sub has penetrated the carriers escort screen. Which as I understand is not an uncommon event, I wouldn't be surprised if such pictures were also common in the mess of norwegian subs too. Which sums up to that, the small diesel subs that are proliferating around the world constitutes a real danger to western naval assets.

http://www.hejlmann.dk/Heraldik/FotoSkibe/DKsubDwightDEisenhover.jpg

[Hugh Jorgan]

asserts?

[Mechanical Ambush]

Scratch one flat-top! :roll:

[Groove]

The Diesel Subs are more dangerous then the Nuclear Hunter/Killer as they are more silent if running on batteries.

[cut]

The Diesel Subs are more dangerous then the Nuclear Hunter/Killer as they are more silent if running on batteries.

sweet

[Trigger]

Scratch one flat-top! :roll:
Possibly.
If the carrier deployed no countermeasures, had no friendly submarine or destroyer/cruiser screen, if the attacking sub scored multiple hits simultaneously or used a nuclear tipped torpedo.
Oh, also: Scratch one diesel sub as soon as launch transients are detected.
Just sayin'.

[Mechanical Ambush]

Scratch one flat-top! :roll:
Possibly.

I was Army, so I dont know, but could that carrier take 2,3, or 4 torpedoes and still float? My old man was on one in WW2 and it took 2 Kamikazi in the center of the flight deck, and they made it back to Pearl.

[hank]

Not trying to be a smart alleck, because I could be wrong. What is the basis for the assertion that diesel's running on batteries are quieter than a Dallas-class or better nuclear? I have never heard that before. A good diesel boat runnung on batteries is silent to be sure, but that technologoy is older and it would seem to me that because the latest subs fomr US, Russia, Britain, etc. are nuclear that they would be the quietest. If anyone has a reason why I am wrong please pass it on.

Understand that I am not saying that these diesel boats are not extremely quiet when running on batteries, but just questioning why they would be "quieter".

hank

[Mr. Nielsen]

Not trying to be a smart alleck, because I could be wrong. What is the basis for the assertion that diesel's running on batteries are quieter than a Dallas-class or better nuclear? I have never heard that before. A good diesel boat runnung on batteries is silent to be sure, but that technologoy is older and it would seem to me that because the latest subs fomr US, Russia, Britain, etc. are nuclear that they would be the quietest. If anyone has a reason why I am wrong please pass it on.

Understand that I am not saying that these diesel boats are not extremely quiet when running on batteries, but just questioning why they would be "quieter".

hank

My guess is that it's because the nuclear powered subs need constant cooling of the reactor. Meaning flowing water, pumps and valves. I suppose size means something too.

Apart from that non-nuclear submarines are getting more advanced too. Air-independent engines, better batteries etc.

Though the one that took the picture of the carrier is old. Looks like something out of "Das Boot".

[fred_engles]

Not trying to be a smart alleck, because I could be wrong. What is the basis for the assertion that diesel's running on batteries are quieter than a Dallas-class or better nuclear? I have never heard that before. A good diesel boat runnung on batteries is silent to be sure, but that technologoy is older and it would seem to me that because the latest subs fomr US, Russia, Britain, etc. are nuclear that they would be the quietest. If anyone has a reason why I am wrong please pass it on.I'm just guessing, but remember that, although the reactor itself would be pretty much silent, the various water pumps, steam turbines, etc are large moving parts, and therefore probably wouldn't be.

On edit: Nielsen got it.

[Sierra]

thats kool!
thanks!
:D

[Marmot1]

During NATO exercisen in 90's on Baltic sea Polish 877 class sub succesfully penetrated nato convoys without detection one time even as a proof that they dit it sub emergen betwen two covoy ships... On Baltic however it is easier to archive this than on Atlantic since Baltic sea is shallow and thus detection is complicated... anyway disel subs are sill very efective

And backing to torpedoes those powered by batteries do not leave tracer if they are underwater and modern torpedo can be programed to not atack side of the ship but to explode under it's bow which is much more devastating and I think even one torpedo can damage carier severly, Also remember that many subs can fire 4-6-8 torpedoes salvo and I am 100% sure that any sub commander who will have oportunity to sink carier would fire full salvo just to be sure that he score it.

[Trigger]

Mechanical Ambush wrote:

I was Army, so I dont know, but could that carrier take 2,3, or 4 torpedoes and still float? My old man was on one in WW2 and it took 2 Kamikazi in the center of the flight deck, and they made it back to Pearl.
It all depends on where the carrier is hit, how many hits, type of warhead and whether the ship is at General Quarters or unaware that an attack is imminent. At GQ the watertight integrity of the ship is increased greatly. A torpedo will cause massive damage but it may be somewhat localized if the ship is sealed up and at battle stations.

Marmot wrote:

And backing to torpedoes those powered by batteries do not leave tracer if they are underwater and modern torpedo can be programed to not atack side of the ship but to explode under it's bow which is much more devastating and I think even one torpedo can damage carier severly, Also remember that many subs can fire 4-6-8 torpedoes salvo and I am 100% sure that any sub commander who will have oportunity to sink carier would fire full salvo just to be sure that he score it.
All torpedos make noise when running at a target. Some torpedos do not require a high-pressure 'air slug' to launch them from the tube. These are more dangerous because the target and her screeners have less time to detect the incoming torpedo. As far as the angle at which torpedos strike, many modern anti-ship torpedos home on the wake of the target ship.

Of course the sub captain will want to fire a full salvo, because it is quite probably the last thing he will do before every ASW helo in the battle group sends him to the bottom. This does not guarantee that he will sink his target though, due to evasive maneuvering and countermeasures.

[radon]

This does not guarantee that he will sink his target though, due to evasive maneuvering and countermeasures.

What kind of evasive manouvers can a aircraft carrier do against torpedoes ?

[Marmot1]

This does not guarantee that he will sink his target though, due to evasive maneuvering and countermeasures.

What kind of evasive manouvers can a aircraft carrier do against torpedoes ?
Fly away using CH-47's to lift it rofl

[Trigger]

Anything but keep going straight. Depending on how far away the torpedos are launched it can increase it's speed considerably. Other ships can also get between it and the torpedo.

These are just hypothetical of course. If a diesel boat is at knife fighting range he's probably going to score.

[OldRecon]

Here is a periscope picture from a danish submarine. I believe the picture is taken during a NATO exercise. Meaning that the sub has penetrated the carriers escort screen. Which as I understand is not an uncommon event, I wouldn't be surprised if such pictures were also common in the mess of norwegian subs too. Which sums up to that, the small diesel subs that are proliferating around the world constitutes a real danger to western naval assets.

http://www.hejlmann.dk/Heraldik/FotoSkibe/DKsubDwightDEisenhover.jpg

Yes, think I've seen similar pics from periscopes of Norwegian subs too.
The funny thing is that most torpedo attacks nowdays are run without use of periscope.
The harder detectability of diesel-electric subs isn't an equation of more silent runing electric motors alone, but also one of size.
Compared to a Los Angeles class attack submarine for instance, most diesel electric subs are "tiny" to say the least.
Though I think the advantage of a diesel electric sub diminish the farther offshore you get.
Atomic subs don't have to use circulation pumps continously. At low speeds free flow circulation is comonly sufficient to cool reactor.
Above 20 kts though I guess pumps will have to be used for sufficient circulation.
A recent interesting development on the "conventionaly powered" submarine scene is the Stirling engine, employed in the latest Swedish diesel electric attack subs. The Stirling engine being a closed cycle engine with extremely low noise radiation levels that enable subs to stay underwater for up to 3 weeks without the need for employing the diesel to recharge batteries.
As for the reputation of the silent running qualities of modern Swedish subs btw., I've been somewhat surprised about the noise emision problems reported with the Australian Collins class (built to a design drawn up by the Swedish firm of Kockums).

[platform389]

Scratch one flat-top! :roll:
Possibly.
If the carrier deployed no countermeasures, had no friendly submarine or destroyer/cruiser screen, if the attacking sub scored multiple hits simultaneously or used a nuclear tipped torpedo.
Oh, also: Scratch one diesel sub as soon as launch transients are detected.
Just sayin'.

Remember, you don't have to sink the carrier to take it out of play. Only have to damage it enough so that flight operations can't be conducted, and the mission is accomplished.

Only gonna get one swipe cuz the screen is gonna jump on you HARD. Just getting away will be difficult, so the first shot better be good.

[elguapo]

I''ve got some peri videos


Land observation
http://www.stamoio.mar.mil.br/Perifoto1.MPG


Frigates
http://www.stamoio.mar.mil.br/Fgreen_FNit.MPG

Carrier
http://www.stamoio.mar.mil.br/VideoNAeSaoPaulo.MPG

Photos:


Ticonderoga caught of guard
Unitas Multi-National Exercise oct/2001
http://www.comfors.mar.mil.br/omsub/tapajo/reabastecimento.jpg

Brazilian Docking Ship screwed
http://www.comfors.mar.mil.br/omsub/tapajo/ndd.jpg

The subs are German models IKL209 from the Brazilian Navy

[Ezra Coli]

I know its an old thread, but I found one of the most dramatic periscope views.

A view of US Nuclear test "Dominic Frigate Bird", a live Polaris missile fired from USS Ethan Allen, 23:30 6 May 1962. This was an air burst at 11,000 feet off Johnson Island. The image of the Frigate Bird mushroom cloud was taken through the periscope of the USS Car*****o (SS-337) 480 nm ENE of Christmas Island. The Car*****o (along with the USS Medregal, SS-480) was within 30 miles of the burst point.

http://nuclearweaponarchive.org/Usa/Tests/FrigateBird640c10.jpg

The launchee:
http://nuclearweaponarchive.org/Usa/Tests/USSEthanAllen.jpg


Frigate Bird was the only US test of an operational ballistic missile with a live warhead. This test involved firing a Polaris A2 missile from a ballistic missile submarine. The missile was launched by the USS Ethan Allen (SSBN-608) at 13:18 (local) from a position 1500 nm east-northeast of Christmas Island. The re-entry vehicle (RV) and warhead flew 1020 nm downrange toward Christmas Island before re-entering the atmosphere 12.5 minutes later, and detonating in an airburst at 11,000 feet. The system tested was a combination of a Polaris A2 SLBM, and a W-47Y1 warhead in a Mk-1 RV. The Mk-1 RV had a beryllium heat-sink heat shield, and with the 717 lb warhead had a gross weight of 900 lb. The missile/RV demonstrated an accuracy on the order of 2200 yards. This warhead had a yield-to-weight ratio of 1.84 kt/kg, but the higher yield Y2 variant tested in Dominic Harlem doubled the yield and nearly doubled tht YTW ratio to 3.61 kt/kg.

[ZeroPositive]

cool photos amazed they came out so nicely :)
that flat top one kicks major ass.

[FLaKKeY]

Yeah disels are quieter on batteries.. but still the XX Electro Boats capable of doing a massive sprint on batteries during the WWII were rather stupid.. to be blunt.. the small were armed with 4 torpedos.. and capable of a short sprint.. Small / Large Version

Erich Topp commanded one of the final built XX Electro Boats the large version for tests to provide the americans information about the submarines capabilities...

[MARINO]

Sink.

[FLaKKeY]

http://www.onpoi.net/ah/pics/users/453_1084102239_sinkingjapdd.jpg