Gotland AIP submarine

tankee1981 SG

The threat involves a new a new class of silent submarines -- subs that the U.S. Navy is having trouble finding under water. In this exclusive investigation, NBC4's Chuck Henry looked into one of those submarines in San Diego.

http://www.nbc4.tv/news/10116514/detail.html

PointBlue SG

Do they cavitate at all?

LazerLordz SG

We’re getting similar ones, the Vastergotland class SSKs..

sgFish SG

cavitiation does not depend on the way the engine runs but the speed of the propellor blades through water. If the prop spins too fast it will definitely cavitate, AIP or not Mr. Green

Shotgun SG

Depends on the depth as well. If u run near the surface and decide to go flank speed, u will cavitate. Generally, if u gotta move fast, do it deeper to avoid cavitation. The sound of the collapsing air bubbles will attract the attention of every passive sonar operator in the vincinity.

beavan SG

and that shows he's trying to show off all his knowledge gotten from tom clancy's novels Mr. Green

jking

molgax SG

ROFLMAO

Shotgun SG

I'm not ashamed to be a fan of the Great Clancy! =D

Seriously, he's a fab military fiction author. He blends in science, science fiction, as well as terrific plots for his novels.

Red Storm Rising: Writes about the "F-119" Frisbee, which turns out to be the F-117 Nighthawk in reality. The SADARM anti armor system, which is only reaching full operational capabilities today.

Debt of Honor: Suicidal japanese airline pilots crashes airliners into buildings. Readers found it too unrealistic and throws harsh criticisms. Look at 9/11?

He's a fantastic novelist that really knows his Military hardware, perhaps with help of inside connections.

/* I read SSN when I was 14, totally fell in love with submarine warfare. Yes, a lot of basis of what I know about submarines comes from that book. So correct me if I make any mistakes ya? */

chillycraps SG

the Vastergotland is actually one generation older than the Gotland. But anything is better than the Sjoormen.

Tom Clancy is actually quite solid, the Pentagon did invite him in to analyse some situation. Love his Hunt for Red October.

gary1910 SG

Not really , more like half a gen perhaps.

After the Swede perfected their Stirling AIP, they decided to build a new class AIP SSK which the result is Gotland which is actually based on the Vastergotland plus AIP from the start of production.

Our Vastergotland with AIP upgrades and perhaps more modern system during the upgrades will have similar or perhaps even better performance( depending on the upgrades & becos newer system is available now) than the Gotland.

Other than the older hull, we are really getting a great AIP SSK at relatively low cost.

dork3d SG

So afterall we might be getting some silent killer in the deep that most sonar can't detect due to our AIP capabilities in our new subs? Very Happy

Shotgun SG

What do you mean? AIP allows the sub to stay submerged longer right? As in it doesn't have to come near the surface to charge it's batteries.

I believe riken was saying that the waters around SG was kinda too noisy for most passive sonar detection.

tankee1981 SG

I am a great fan of Clancy too! Unfortunately the more recent book as a far cry from the early classics such as the Hunt for Red October, Red Storm Rising...

PointBlue SG

Laughing kns i learnt that word from that old Jane's game called SSN688(I) lor. the sonar guy always say: Conn, Sonar, cavitating.

Shotgun SG

LOL! Then ur entire broadband waterfall display goes all bright and fuzzy rite? hahaha!

The only other time that happens is when u're crawling at 2 knots, and the towed sonar array starts sinking and dragging the bottom.

gary1910 SG

So far we duuno how much upgrades is for our own Vastergotland, but check out the Swede upgrades for it :

http://www.kockums.se/Submarines/sodermanland.html

For example look at our Challenger class , the upgrades is very, very extensive.

New combat console, new engines plus hosts of new sensors including flank array sonar.

Challeger class with new passive flank array sonar.

BTW, the Viking program is dead now, but we remain as an observer for the new Swedish SSK , the A26.

For more info, cheack out this long thread:

http://militarynuts.com/index.php?showtopic=200&st=0

riken1974 SG

FYI....that's not the sonar flank array....at that time still no flank array yet...if u ask me what's that...sorry...can't tell u...

gary1910 SG

Issit???

Everyone was speculating it is, but since you are a former crew, no reason to doubt you.

LazerLordz SG

Indeed. Shocked

Shotgun SG

Passive ranging sonar?