Stealth submarine shaping - Type-212CD, etc

covert_shores

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Hi, starting to put some info out there about the Type-212CD and other 'stealth shaped' submarines. You'll actually see similar lines in other submarine classes of certain countries
 
A common theme for future submarines has been going totally sail less. That or extendable types. Would it make the hull stronger in that area if the hull form was to have greater circumferende to allo the sub to ride higher and achieve the same effect as a sail/conning tower?
 
Hm. Wouldn't such shapes of submarine hull conflict with laminar flow, thus essentially cancelling the whole advantage?
 
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Interesting.

I wonder if this design owes anything to the feed back from the Australian submarine program in which the Germans were advised their design was deficient in terms of acoustic signatures.
 
Lockheed definitely considered it back in the 80's although the navy didn't really like the design

http://www.hisutton.com/Lockheed-Stealth-Submarine-Design.html

Interestingly enuff this wasn't the first time Lockheed worked on a sub project, they were part of the "aircraft" sub concept back in the 50's (aircraft in this case meaning number biult not the aircraft carrier sub concept) with there design being called empire.
 
Interesting.

I wonder if this design owes anything to the feed back from the Australian submarine program in which the Germans were advised their design was deficient in terms of acoustic signatures.
Stealth shape and acoustics are two different things. In this regard, Australia cited the 216-class freestanding propeller as one reason, but the real reasons are more political, as Australia was really looking for reasons why they should not be German or Japanese boats. Ultimately, Australia also found political reasons to give France the boot.
Stealth technology was considered by tkMS (HDW) as a variant for the Type 800 as early as around 1997. This variant looked very similar to the current form for 212CD.
 

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