MODIFICATION OF CHONGJU PATROL CRAFT NAMPO SHIPYARD, NORTH KOREA(SANITIZED)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP90T00784R000100250009-9
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 5
• Document Creation Date: December 28, 2016
• Document Release Date: September 9, 2011
• Sequence Number: 9
• Publication Date: June 15, 1982
• Content Type: REPORT

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Attachment to Z-15250/82
NPIC/IEG (06/82)'
15 JUNE 1982
MODIFICATION OF CHONGJU PATROL CRAFT
NAMPO SHIPYARD, NORTH KOREA
1. (S/D) SIGNIFICANCE: THREE CHONGJU PATROL CRAFT (PC)
HULLS ARE BEING MODIFIED TO A MISSILE ATTACK BOAT (PTG)
CONFIGURATION. IN ADDITION, ANTISUBMARINE WARFARE (ASW)
MODIFICATIONS ARE IDENTIFIED FOR THE FIRST TIME ON
PREVIOUSLY LAUNCHED CHONGJU PC.
2. (S/D) REMARKS: CONFIRMED THE
MODIFICATION OF THE THREE CHONGJU PATROL CRAFT HULLS
REMAINING ON THE FENCE ENCLOSED BUILDINGWAYS AT NAMPO
SHIPYARD TO A PTG CONFIGURATION. ONE CHONGJU PTG HAD THREE
EXPOSED SS-N-2 (STYX) CRUISE MISSILE LAUNCH RAILS AND ONE
STYX MISSILE LAUNCHER MOUNTED ON THE DECK (GRAPHIC 1 OF
2). THE OTHER TWO CHONGJU PTG HULLS WERE IN AN EARLIER
STAGE OF MODIFICATION. THE COMPLETION OF THIS MODIFICATION
PROGRAM WILL PROVIDE THE WEST COAST FLEET WITH THREE NEW
PTG CAPABLE OF LAUNCHING FOUR STYX MISSILES EACH. THE SAME
NUMBER OF THE INDIGENOUS SOJU PTG ARE CURRENTLY UNDER
CONSTRUCTION AT NAJIN SHIPYARD NUMBER 28 ION
THE EAST COAST, AND THE NORTH KOREANS HAVE A TOTAL OF EIGHT
SOVIET-BUILT OSA I PTG, WITH FOUR DEPLOYED ON EACH COAST.
(S/D) THE CHONGJU HULLS ARE
WHEN COMPLETED THE VESSELS WILL HAV1 r'uutt
CRUISE MISSILE LAUNCHERS, TWO ON EACH SIDE MOUNTED IN
TANDEM, AND ANTIAIRCRAFT. GUNS MOUNTED ON THE CENTERLINE,
FORE AND AFT. THE FORWARD PORTION OF THE DECKHOUSE HAS
BEEN ERECTED ON ALL THREE UNITS AND THE MOUNTING RINGS
FOR THE ANTIAIRCRAFT GUN SYSTEMS ARE IN PLACE. THE
CONFIGURATION OF THE WEAPONS SYSTEMS AND THE SIZE OF THE
VESSELS ARE SIMILAR TO THOSE OF THE SOJU PTG, BUT DIFFERS
FROM EITHER THE SOJU OR OSA I PTG IN THAT'THE BRIDGE
AREA/FORWARD PORTION OF THE DECKHOUSE IS NOT THE SAME, AND
THE CRUISE MISSILE LAUNCHERS ON THE CHONGJU PTG ARE MOUNTED
CLOSER TO THE STERN, ENTIRELY AFT OF MIDSHIPS.
These notes have been prepared for briefing purposes only and should not be used for detailed ana-
lytical work. Their use should be restricted to the particular briefing board(s) they were prepared for
and must be considered valid only for the reporting period as indicated by the date of issue.
WARNING NOTICE
Intelligence Sources
and Methods Involved
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(S/D) THE CHONGJU HULLS HAVE BEEN AT NAMPO SINCE 1974. AN
EXPERIMENT INVOLVING STYX MISSILE LAUNCHER COVERS AND ONE
OF THESE CHONGJU HULLS WAS OBSERVED AT THE SHIPYARD DURING
JUNE 1.977. HOWEVER, NO LAUNCH RAILS WERE MOUNTED ON THE
VESSELS AND THE LAUNCHER COVERS WERE PLACED ON BUT NOT
AFFIXED TO THE DECK OF ONE UNIT. BETWEEN MID-1977 AND
MID-1981 NO MORE THAN FOUR STYX MISSILE LAUNCHER COVERS
WERE OBSERVED AT THE SHIPYARD AND THE CHONGJU PROGRAM
APPEARED TO HAVE BEEN ABANDONED. TWO OF THE FIVE CHONGJU
HULLS AT NAMPO WERE CONFIGURED AS PATROL CRAFT AND LAUNCHED
DURING 1981. BY AUGUST 1981 EIGHT MISSILE LAUNCHER COVERS
WERE NEAR THE THREE REMAINING CHONGJU HULLS, AND 12 WERE
OBSERVED BY MARCH 1982. THIS ACTIVITY PARALLELS THE
SOJU PTG CONSTRUCTION PROGRAM AT NAJIN SHIPYARD NO. 28.
THE FOUR EAST COAST CHONGJU UNITS WERE UNDER MODIFICATION
TO A PATROL CRAFT CONFIGURATION AT NAJIN SHIPYARD NO. 28
DURING 1981; TO DATE ONLY ONE CHONGJU PC HAS BEEN LAUNCHED
THERE.
(S/D) IN ADDITION TO THE ABOVE ACTIVITY, THE
OF NAMPO, OF NAJIN, REVEALED FURTHER
MODIFICATION TO TWO OF THE THREE PREVIOUSLY LAUNCHED
CHONGJU PC. TWO LAUNCH RAILS FOR DEPTH CHARGES HAD BEEN
MOUNTED ON THE STERN, AND POSSIBLE ASW ROCKET LAUNCHERS
WERE OBSERVED ON THE WINGS OF THE SUPERSTRUCTURE OF EACH
VESSEL (GRAPHIC 2 OF 2). THIS MODIFICATION WILL FURTHER
AUGMENT THE NORTH KOREAN NAVY ASW CAPABILITY.
3. (S)
NOFORNI 25X1
Attachment to Z-15250/82
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These notes have been prepared for briefing purposes only and should not be used for detailed ana-
lytical work. Their use should be restricted to the particular briefing board(s) they were prepared for
and must be considered valid only for the reporting period as indicated by the date of issue.
WARNING NOTICE
Intelligence Sources
and Methods Involved
1.. lnC DF
gFrRFT
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Sanitized Copy Approved for Release 2011/09/09: CIA-RDP90T00784R000100250009-9