Type 09V/09VI (095/096) Nuclear Submarine Thread


gelgoog

Captain
Registered Member
Fine. A Yasen with a pumpjet.
Just look at the tailfin. Or even the overall shape of the submarine really.
I doubt the Chinese attack submarine will look like this. Traditionally Chinese follow Western submarine design.
 

Xsizor

Captain
Registered Member
Fine. A Yasen with a pumpjet.
Just look at the tailfin. Or even the overall shape of the submarine really.
I doubt the Chinese attack submarine will look like this. Traditionally Chinese follow Western submarine design.
"Yasen with a pump-jet"
" Chinese follow Western submarine design"

Very "insightful" comments.
Chinese Submarines are double hulled while Western ( US, UK, France) are Single hulled.
 

gelgoog

Captain
Registered Member
Even the Russians now use single-hulled construction on the Lada and some sections of the Yasen-M.
Because of limitations in shipbuilding technology the Chinese used double hulled construction. It was easier to build high pressure resistant hulls with a simpler cylindrical shape in the inner hull while still having hydrodynamic shape with easy to machine outer hull. But given the need to massively ramp up construction of submarines, particularly nuclear attack submarines, and new facilities I would not be surprised if at least some sections of the 095 will be single hull to speed up construction.
 

retac21

Just Hatched
Registered Member
Even the Russians now use single-hulled construction on the Lada and some sections of the Yasen-M.
Because of limitations in shipbuilding technology the Chinese used double hulled construction. It was easier to build high pressure resistant hulls with a simpler cylindrical shape in the inner hull while still having hydrodynamic shape with easy to machine outer hull. But given the need to massively ramp up construction of submarines, particularly nuclear attack submarines, and new facilities I would not be surprised if at least some sections of the 095 will be single hull to speed up construction.
Single vs double hull depends on what you want to do, one is not inherently superior to the other. The German Type 212 uses a double hull construction because they use the space between the hulls for storage tanks that would be dangerous to have inside the sub, for example.
Someone mentioned the X tail, and it's the same stpry, a X tail is used for conventional boats that may have to bottom out, but nuclear subs can't so it makes no sense to have one.
 

Xsizor

Captain
Registered Member
Single vs double hull depends on what you want to do, one is not inherently superior to the other. The German Type 212 uses a double hull construction because they use the space between the hulls for storage tanks that would be dangerous to have inside the sub, for example.
Someone mentioned the X tail, and it's the same stpry, a X tail is used for conventional boats that may have to bottom out, but nuclear subs can't so it makes no sense to have one.
Indeed. The X tails help in the littorals. Also, the Next generation SSN proposal for US include an X tail design.
 

Richard Santos

Senior Member
Registered Member
Even the Russians now use single-hulled construction on the Lada and some sections of the Yasen-M.
Because of limitations in shipbuilding technology the Chinese used double hulled construction. It was easier to build high pressure resistant hulls with a simpler cylindrical shape in the inner hull while still having hydrodynamic shape with easy to machine outer hull. But given the need to massively ramp up construction of submarines, particularly nuclear attack submarines, and new facilities I would not be surprised if at least some sections of the 095 will be single hull to speed up construction.
except for a few exceptions mostly during early days, single hulled SSNs from the west do have basically simple cylindrical shaped pressure hulls. The hydrodynamic stream lined sections only cover the front and back mostly beyond the ends of the pressure hull.

So inability to fabricate any very complicated pressure hull shapes so not seem to be enough reason to not adopt singke balled SSNs.
 

Tam

Brigadier
Registered Member
Even the Russians now use single-hulled construction on the Lada and some sections of the Yasen-M.
Because of limitations in shipbuilding technology the Chinese used double hulled construction. It was easier to build high pressure resistant hulls with a simpler cylindrical shape in the inner hull while still having hydrodynamic shape with easy to machine outer hull. But given the need to massively ramp up construction of submarines, particularly nuclear attack submarines, and new facilities I would not be surprised if at least some sections of the 095 will be single hull to speed up construction.

It seems more likely to me that the Chinese are already using a hybrid, starting with the 093 and 094 series. The front bow and the tapering tail end are double hulled to provide for the complex geometry in the tapering, but the middle hull is single where the ballast tank is only on the top and shoulder. This is more evident in the 094 where there is no ballast tank wrapping around the middle hull where the hump is placed over; that the ballast tanks are in the hump itself, and all the limber holes are located in the hump. With the middle and hump section being single hulled, this allows for more internal space. Given the close connection between the 093X and 094X, the midsection of the 093X should be single hulled, with the ballast tanks on this section on the top that makes up the minor hump. The main difference between the 093X and the 094X is the midsection, while they have identical bow and aft sections. This can allow them to change the submarine while on the production line as per political decisions of the day, by inserting a different midsection in.
 

Richard Santos

Senior Member
Registered Member
ballast tanks won’t be on the top of the hull in either single or double hull submarines. if it were it would be difficult to flood quickly to dive the boat quickly, and it would reduce the boat’s stability when underwater.

on Every submarine, the ballast tanks are situated so that they will be almost completely underwater even when the submarine is fully surfaced. this allows the ballast tanks to be flooded quickly by simply opening doors on the bottom of it if the submarine has to dive quickly. It also allow the ballast tanks to provide buoyancy to the submarine even on the surface when it is fully blown

On modern single hull nuclear submarines the ballast tanks are between the hydrodynamic bow snd stern casings and the pressure hull. The fact that forward ballast tank is At the front end of the boat, and below water even when the sun rains at the surface, is how so many modern submarines can get away with mounting their forward dive planes above water when the submarine is on the surface
 
Last edited:

Top