Hangor Class Submarine Project | Updates & Discussions

[DESERT FIGHTER]

That would be th case if the subs Pakistan bought are still in developmental phase?

Maybe a new Submarine is in the works.

 

[Tank131]

For people who remember the timeline for agosta 90b (which took years to complete) this is no surprise.

 

[ZAC1]

recently a doc is shown in pdf thread related as SAM purchased recently in 2015.in that list of items torpedos for S20 was mentioned.i think we will get these subs soon enough

 

[Gregor Clegane]

As per MODP statement the sub construction work will start simultaneously at both countries. I am sure Pakistan may get atleast one sub in 2018, 2nd 2020 and two others up to 2022.

Wuchang will lay down the keel of the first submarine not before 2017-18 after which it will take another 36-48 months to complete construction.

 

[Mrc]

Not all subs will be delivered at same time...what i read is deliveries of chines made subs will b completed by 2022 and pak made ones by 2028... i might be wrong

 

[Bilal Khan (Quwa)]

@Penguin is it true that Stirling AIP is best suited for cold water environments?

 

[Blue Marlin]

@Penguin is it true that Stirling AIP is best suited for cold water environments?

not really the propulsion systems are enclosed from the elements, so it depends on needs really.
also it depends on where you buy the sub from. the french have mesma aip's. the germans and recently the spanish have fuel cell aips. Sweden ,china have striling aips. and possibly russia will go for Stirling enignes too.

if you want a powerful submarine when you go for the mesma aip (which you currently have) but have the downside of being noisy.
fuel cells are quieter as they have very little moving parts but dont produce as much power as mesma'a
Stirling engines are in between and produce more power than fuel cells but require cooling and need to be on custom frames to reduce vibrations

 

[Mo12]

Is this in relation to CPEC? The submarines will help protect Chinese interest in the new port?

 

[Penguin]

@Penguin is it true that Stirling AIP is best suited for cold water environments?

I really wouldn't know without some research.

Stirling Engines
Although well established as a feasible AIP device since their introduction into the Gotland class in 1992 [Ref. 15],
they do not appear to have been further developed for SSK use. This is not withstanding the innovative efforts
being conducted by Whisper Tech of NZ, where multiple cylinder arrangements are being progressed to provide
1kW sets but at a low power density of 5W/litre [Ref. 16].
Figure 3 shows the estimated performance of the Swedish Gotland class when operating with and without the
currently installed battery set and AIP. The plot shows how the 150kW Stirling engine AIP starts to give the SSK
endurance below 8 knots thus allowing extended poise in the Baltic Sea operating area where transit times to the
patrol areas would be small.
It is likely that the trend away from Stirling engines is due to their poor industrial infrastructure and their upkeep
and noise which would be greater than a passive fuel cell system notwithstanding enclosures and modern rafting
methods
http://www.bmtdsl.co.uk/media/10576...r-and-Propulsion-Conpaper-Pacific08-Jan08.pdf.

 

[Bilal Khan 777]

and these 8 subs will be diesel electric submarines or nuclear submarines?

The 08 Kilo derivates with PK customization are all conventional Diesel Electric, AIP, long endurance subs.

yes but would that be one type of sub or two?

this is a contract for 08 submarines of a single type, multi role.

and these 8 subs will be diesel electric submarines or nuclear submarines?

All the mentioned submarines in this contract are 08 conventional SSKs.

 

[Blue Marlin]

The 08 Kilo derivates with PK customization are all conventional Diesel Electric, AIP, long endurance subs.



this is a contract for 08 submarines of a single type, multi role.



All the mentioned submarines in this contract are 08 conventional SSKs.

the type 39's are an indigenous design look at it the fron bow looks compleatly differant from the kilo, the sail is forward leaning which was the norm for french subs at the time. the type 39a/41 has a typical layout and is bigger. and not to mention they manages to shrink it as a s20.

 

[ashok321]

Pakistan to buy eight attack submarines from China

http://timesofindia.indiatimes.com/...ubmarines-from-China/articleshow/53944530.cms


Analysts speculate that the new submarines will be lighter export versions of the People Liberation Army Navy's (PLAN) Type 039 and Type 041 Yuan-class conventional attack submarines.

The first four submarines are expected to be delivered by the end of 2023 while the remaining four will be assembled in Karachi by 2028.

@Penguin is it true that Stirling AIP is best suited for cold water environments?

Yes.

Because the sound travels faster in warm water than in cold water.
Since the Sterling engine consists of cylinders, it produces sound & vibration.
Acoustic signature gets exposed.

Fuel cells work on chemical reaction = Quieter.

 

[Bilal Khan 777]

the type 39's are an indigenous design look at it the fron bow looks compleatly differant from the kilo, the sail is forward leaning which was the norm for french subs at the time. the type 39a/41 has a typical layout and is bigger. and not to mention they manages to shrink it as a s20.

I have seen both, hence the assumption.

 

[Blue Marlin]

I have seen both, hence the assumption.

that maybe your "assumption" the bow, sail, rear are all differant for the kilo. the only similarity is that the hull is round.

 

[AZADPAKISTAN2009]

Sub Bhuddhe ho jain ge , by the time 2028 rolls out

Kuch Karo Pakistan Navy Kuch Karo