Chinese Submarines? Yea we got that covered...

TLAM Strike · 01-12-12, 02:39 PM

Quote:

Originally Posted by nikimcbee

Did they go shopping at a Russian Navy fire sale?

The key word here is 'Fire'...

Subnuts · 01-12-12, 07:38 PM

Won't be able to hear engine or propeller sounds with all that flow noise. Superb acoustic camouflage. A submarine so noisy, you can't perform TMA on it.

nikimcbee · 01-12-12, 07:47 PM

Quote:

Originally Posted by Subnuts

Won't be able to hear engine or propeller sounds with all that flow noise. Superb acoustic camouflage. A submarine so noisy, you can't perform TMA on it.

Conn, sonar:" picking up a washing machine noises sir.

"

geetrue · 01-12-12, 09:54 PM

Quote:

Originally Posted by Subnuts

Won't be able to hear engine or propeller sounds with all that flow noise. Superb acoustic camouflage.
A submarine so noisy, you can't perform TMA on it.

We had this happen back in 1970 in the Med on patrol ...
sonar supervisor blue crew Sam Houston SSBN 609.

sonar platform 200 feet 4kts

Port to port 2,000 yards just a hiss in a hurry

Best guess Russian November in a hurry

Too quick for BQQ 3C

recorder saw it on BQR-7

so what did we do

Conn/sonar fast moving contact 270

Conn eye, "keep me informed"

Conn/sonar lost contact in the baffles

Conn eye

Kazuaki Shimazaki II · 01-13-12, 01:08 AM

Quote:

Originally Posted by geetrue

Port to port 2,000 yards just a hiss in a hurry

From the sounds of this, the November managed to sneak or at least stumble its way to within 2km of a US SSBN and only popped up when it accelerated.

How did it get so close? I thought the Americans have much better sonar!

Osmium Steele · 01-13-12, 08:57 AM

I'd imagine the 2000 yards is the closest point of approach. Though I am certainly correctable on this. To me, sonar was just an signature on the qual card.

Osmium Steele · 01-13-12, 09:00 AM

TLAM, I think Platapus may be on to something. The limber holes line up perfectly for the Song class and the top of that sail looks like a refit.

Nice eye Platapus.

Jimbuna · 01-13-12, 09:55 AM

Is that scaffolding at the bottom of the tower?

TLAM Strike · 01-13-12, 10:55 AM

Quote:

Originally Posted by phil21

Interesting picture. Looks like they made some serious modifications - more or less. As far as i can tell they changed the sail, modified part of the hull. What for? The chinese maybe have a strange way of doing their stuff, but i dont think they are doing it for fun...

Quote:

Originally Posted by Osmium Steele

TLAM, I think Platapus may be on to something. The limber holes line up perfectly for the Song class and the top of that sail looks like a refit.

Nice eye Platapus.

There are three variants of the Song class. The Type 039 was the first (Hull 320 that Platapus mentioned was the sole sub of this class) this has the stepped sail we all know from Sub Command:

The Type 039G and 039G1 are the other two variants, they do not have the stepped sail (plus have more up to date gear, anechoic tiles etc):

The 039G can be considered the "Production" model and the 039G1 the "Flight 2"

The sub in the 1st picture is most likely of the 039G or 039G1 class because I don't believe the 039 got the 039G sail as a refit. (if someone knows otherwise let me know)

geetrue · 01-13-12, 11:00 AM

Quote:

Originally Posted by Kazuaki Shimazaki II

From the sounds of this, the November managed to sneak or at least stumble its way to within 2km of a US SSBN and only popped up when it accelerated.

How did it get so close? I thought the Americans have much better sonar!

This was 42 years ago

Boomers are Fleet Balistic Missile boats FBM's and they trail a wire behind them that floats to to the surface fed out from the sail.

To turn too quick is cut the wire and lose contact with CTC in Colorado

200' in a termal layer near North Africa near shipping lanes can hide long range contacts

The sonar was superb in those days as in today with even more hydrophones, hindsight sonar, fwd looking sonar, triangling sonar, passive sonar, waterfall sonars and torpedo sonars, all much better today.

The sonarman is the key and all he can do is report what he see's. It's up to the conn to react.

I don't want to find out who's the best after a war ... before is better and that takes professionals dedicated to their job of staying alive

magicstix · 01-13-12, 06:48 PM

Quote:

Originally Posted by geetrue

Too quick for BQQ 3C

BQQ3? Wow you're really dating yourself there...

In any case that song definitely looks roughed up... Maybe she got run over by something? :>

01-12-12, 07:38 PM	#2
Subnuts The Old Man Join Date: Feb 2005 Location: Connecticut Posts: 1,658 Downloads: 14 Uploads: 0	Won't be able to hear engine or propeller sounds with all that flow noise. Superb acoustic camouflage. A submarine so noisy, you can't perform TMA on it. __________________ My Amazon.com reviews

01-13-12, 08:57 AM	#6
Osmium Steele Ace of the Deep Join Date: Apr 2011 Location: Upper midwest USA Posts: 1,101 Downloads: 22 Uploads: 0	I'd imagine the 2000 yards is the closest point of approach. Though I am certainly correctable on this. To me, sonar was just an signature on the qual card. __________________ In the month of July of the year 1348, between the feasts of St. Benedict and of St. Swithin, a strange thing came upon England... My U297 build thread

01-13-12, 09:00 AM	#7
Osmium Steele Ace of the Deep Join Date: Apr 2011 Location: Upper midwest USA Posts: 1,101 Downloads: 22 Uploads: 0	TLAM, I think Platapus may be on to something. The limber holes line up perfectly for the Song class and the top of that sail looks like a refit. Nice eye Platapus. __________________ In the month of July of the year 1348, between the feasts of St. Benedict and of St. Swithin, a strange thing came upon England... My U297 build thread

01-13-12, 09:55 AM	#8
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,525 Downloads: 63 Uploads: 13	Is that scaffolding at the bottom of the tower? __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!