어뢰설계도의 단서 - Iranian Military Capability
(WWW.SURPRISE.OR.KR / 아무개 / 2014-01-26)

합조단에서 언급한 두종류의 설계도, PT-97W 와 CHT-02D 에 대하여 언급된 책 (붉은색 폰트처리는 조선관련)

Iranian Military Capability 2011 (이란의 군사력 2011) Published by: berthakey8407 on Jun 09, 2011 Copyright: Attribution Non-commercial 4. Naval Forces (제4장 해군) Open Source Intelligence Project Independent and objective analysis of current Iranian military capability using open-source non-classified information. Assessments and views expressed represent those of the authors and are not affiliated with any special interest group or political agenda. Version 1.0 Jan 2011 http://www.scribd.com/doc/57412768/20/Torpedoes-Mines

About the Project (프로젝트 에 대하여)

The Open Source Intelligence Project 2011 is an attempt to draw together the most salient bits of currently available Open Source material to piece together a broad and largely complete analysis of Iranian military capability. Open Source refers to unclassified, public sources.
The co-authors and reviewers come from a wide range of backgrounds, including in some cases extensive military intelligence experiences and/or relevant specialist knowledge. However, their primary connection is an appreciation and active participation in the Open Source intelligence scene. All those involved have contributed on an amateur/civilian basis. Some have requested to remain anonymous, for various reasons, which we must respect.
The project was started in April 2010 and took months of writing, research, drafts and revisions to make it into the form you are reading. We have attempted to provide a single text that will be easy to navigate and digest. However, it is the work of multiple people and this may be apparent in different writing styles and minor formatting differences. We apologize for this, but believe it is inevitable in this type of undertaking.
We hope that you find the document interesting and informative – we are hopeful that there is some information and analysis which although open source in nature, is fresh and stimulating to even a highly informed reader.
Co-Authors (This Section, no order)
• ‘TLAM Strike’(pseudonym)<---------------------------공동저자
• Anonymous (1) <---------------------------------------익명처리
Main Reviewer/Contributor (This Section)
• Anonymous (2)
• Anonymous (3)
Additional Reviewing Pool (No order)
• Sean O’Connor
• Anonymous (4)
• Galan Wright
 

4. Naval Forces (제4장 해군, 해군력)

4.1 Overview (해군의 개요)
History: Iran's navy has though out its history been considered the most minor of its military branches, although it has existed since 500 BC. (중략)
By the 2000s Iran, had started construction of a new warship class named Mowj. This frigate took eight years to finish and provided little added capabilities over its predecessors. A indigenous submarine program also began at this time utilizing North Korean expertise. (조선의 기술을 응용하여...) So far, seven Ghadir class midget submarines have been launched. A single Nahang submarine has also been built and appears to be mostly of Iranian design. Production of North Korean fast attack craft has resulted in two classes being fielded by the IRGCN, the Peykapp and Tir, and series of novel semi-submersible torpedo boats. (중략)

(Page 77)
4.6.12 Torpedoes & Mines (어뢰와 기뢰)

The Iranian Navy uses legacy US supplied lightweight and more recently Russian supplied heavyweight torpedoes, whilst the IRGC-N largely operates North Korean types, often locally manufactured.(이란 해군은 미국이 제공한 경어뢰를 사용하다가 나중에 러시아의 (무거울) 중어뢰를 사용하게 되였으며, 그 과정에서 조선의 어뢰모델 을 현지생산하여 사용하게 되였다. 주: 기술전수 받았다는 뜻인듯.)



(P78)

PT-97W / YT534W1 <--------------------
. Range: 5.4 – 8.1 nm
. Speed: 35 - 40 kts
. Guidance: Passive acoustic homing, wake-homing
. Fuzing: Contact and magnetic exploders
. Warhead: 250 kg
. Depth: 2 - 14 m
. Engine: Electric motor powered by a silver zinc battery

North Korean supplied anti-surface torpedo for the IPS-18 TIR class torpedo boats. Locally produced version has designation YT534W1 which is likely the North Korean export designation. The weapon is thought to have entered service with DPRK in 1997 and represents the first generation of North Korean produced heavyweight torpedoes. The type has a distinctive ‘pie-disk’ nose for a passive-homing sonar. The design appears largely based on the Russian TEST-71 series but is not wire guided (and couldn’t be for torpedo boat launch anyway). The rudder features a distinctive cut-out which helps identify it.
A typical launch scenario would involve the torpedo boat approaching the target from the rear where it is noisiest to maximize the chances of a lock. However the weapon’s short range and modest speed mean that it can easily be out –run by modern gas-turbine powered warships, but is still very potent against fleet support vessels.
It is possible that this type is also carried by the IS-120 Ghadir class midget submarines but this is unconfirmed and the related CHT-02D seems more likely.

(P79)

CHT-02D <---------------------------------

. Range: 5.4 – 8.1 nm
. Speed: 35 - 40 kts
. Guidance: Passive acoustic homing, wake-homing
. Fuzing: Contact and acoustic exploders
. Warhead: 250 kg
. Depth: 2 - 14 m
. Engine: Electric motor powered by a silver zinc battery

North Korean anti-surface torpedo for the IS-120 mini-submarines, the CHT-02D is a successor to the PT-97W. The main external difference is the placement of the control surfaces ahead of the propellers. This precludes surface launch but is common in submarine-launched torpedoes. General performance remains as per PT-97W.
This type of torpedo gained notoriety in the sinking of the South Korean corvette Cheonan in April 2010. In that incident, it is believed that an MS-29 submarine was employed – being the North Korean designation of the IS-120 Ghadir class. The CHT-02D armed Ghadir class is almost certainly the IRGC-N’s most potent combatant, but the effectiveness of the torpedo comes from the factor of surprise rather than its performance.
There is no open-source evidence of the CHT-02D being in Iranian service but it seems very probable.

(중략)

(P80)

DPRK 32 cm Torpedo (DPRK 는 조선민주주의인민공화국의 영문약자)
. Range: est 2.7 –3.0 nm
. Speed: est 30 –35 kts
. Guidance: Passive acoustic homing, wake-homing
. Fuzing: Contact and magnetic exploders
. Warhead: est 45 kg
. Depth: 2 - 14 m
. Engine: Electric motor powered by a battery, possibly sea water activated
Mk-44 or -46 practice round fired from Mowj Class.Source FARS
Designation unknown. Anti-surface torpedo for the IPS-16 PEYKAP, GAHJAE, KAJAMI, and MK 13 torpedo boats, nowlocally produced in Iran. Estimated characteristics based on older US and European designs. The effectiveness of lightweight torpedoes in the anti-shipping role is dubious.

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