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분류없음2010.06.02 01:10
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The recent sinking of a South Korean warship Cheonan has brought more details of DPRK's midget submarine fleet into the public domain. Reliable information about the "Yeoneo" class submarine comes from captured Sang-O crewman Lee Kwang Soo, interviewed by South Korean blog Daily-NK ( http://www.dailynk.com/english/read.php?cataId=nk02500&num=6445 ).

Based on his information, I've updated my sketch of the most probable North Korean midget submarine class involved in the incident. The externally mounted torpedoes are described by the former DPRK submariner. Lee cites quite launch, whereby the torpedo 'swims' away under its own power rather than being forcible ejected from the torpedo tube (which is noisy and may alert the target to the launch) as the motive for this arrangement. This is plausible of course and is not unique among small submarines. The disadvantages of course are performance and weapons maintenance.

It should be noted that the previously captured 'P-4' boat clearly had design adaptions for two internally mounted torpedo tubes, and the essentially similar IS-120 'Ghadir' class operated by Iran also has internally mounted tubes.

http://planeman-bluffersguide.blogspot.com/2010/06/north-korean-yeoneo-class-attack-sub.html
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연합뉴스 기사를 보고 위성사진을 한번 봤습니다
38°59'02.22" N
125°42'37.11"E

http://media.daum.net/politics/dipdefen/view.html?cateid=1002&newsid=20100530162105670&p=yonhap
연합에 나온 사진을 촬영한 날짜는 2004년 6월입니다

아래는 2009년 12월 20일 위성사진입니다, 2004년 6월에서 5년이상 지난 시점이라 조금 다릅니다
구글 위성사진에다 PLANEMAN이 만든 북한 방공망 지도를 얹어 봤습니다


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Ghadir Class Midget Submarine


Quantity in Service: 5+ (3 min)
Dimensions: L 29m, W 2.75m
Displacement : 120 tons dived
Crew: ?
Endurance: ?
Speed (est): 11kts surfaced, 8kts submerged
Powerplant: Diesel-electric

Armament: 2 x 533mm (21”) torpedo tubes with 2 torpedoes, Skhval rocket torpedoes or ~4 mines. Possibly submarine launched anti-ship missiles but unsubstantiated.

Of North Korean design, the IS-120 Ghadir (Qadir) submarine closely resembles the North Korean “P-4 Class”.

Some models of the Ghadir appear to have conventional cruciform tail fins with conventional propeller instead of the North Korean sub’s unconventional control plane arrangement and co-axel twin propeller. Photos of a production boat however show the unusual under-tail hydroplane position as per the North Korean boats. The coaxil twin props of the P-4 is replaced by a single skewed skrew in the usual place, plus a small ducted skrew mounted above, possible steerable. The exact reasoning for the two propellers is not clear but it is likely that the smaller one is intended for slow/quite running and counter-drift. Its mast and unusual snorkel (which folds backwards into the hull -casing when not in use) is almost identical however. It is possible that there are several iterations of boat with varying tail arrangements and snort-mast stowage (some appear to remain above the deck when folded).

Another charactristic which has yet to be explained is a small container mounted externally on the forward deck just ahead of the sail. This resembles an oil drum. One guess might be compressed gas.

Estimates of the size of this submarine vary greatly but video evidence confirms that there's barely enough room to stand up in the hull.


These boats are credible littoral submarines well suited to mine laying, infiltration/Special Forces operation and limited anti-surface warfare. Their torpedo tubes could conceivably carry the Shkval rocket torpedo or even submarine launched anti-ship missiles which Iran reportedly has. But their sensor fit is almost certainly basic by contemporary standards limiting their potential against other subs and advanced warships. There is also no reason to suppose that they are particularly quiet, with no signs of raft-mounting for the engines, or accustic tiling, and the shallow water of the Gulf is likely to leave them exposed to anti-submarine warfare.

Google Earth imagery shows a single midget sub moored in Bandar-e Abbas port in 2005, although this looks more like a Nahong class sub to me. In 2008 imagery there are four submarines however: