AGENT VESSEL CONSTRUCTION WONSAN SHIPYARD, NORTH KOREA (SANITIZED)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP84T00491R000101350001-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 6
• Document Creation Date: December 28, 2016
• Document Release Date: March 2, 2012
• Sequence Number: 1
• Publication Date: April 9, 1984
• Content Type: MISC

Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101350001-7
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(c) NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
Attachment to Z-18033/84
NPIC/IEG (04/$'l)
9 APRIL 1984
AGENT VESSEL CONSTRUCTION
WONSAN SWN)
1. SIGNIFICANCE: FOUR NEW CLASSES OF AGENT-ASSOCIATED VESSELS AND
INCRUM-MILDING HALL CAPACITY HAVE BEEN IDENTIFIED AT WONSAN
SHIPYARD. (SWN)
2. REMARKS: FOUR NEW CLASSES OF PROBABLE AGENT INFILTRATION-
ASSOCIATED VESSELS HAVE BEEN IDENTIFIED AT WONSAN SHIPYARD 1 ON
THE EAST COAST OF NORTH KOREA (GRAPHIC 1). THESE INCLUDE A
26-METER SPECIAL WARFARE SUPPORT CRAFT (LCW), A 16-METER
PROBABLE SEMI-SUBMERSIBLE SWIMMER DELIVERY VEHICLE (SDV), A
SEMI-SUBMERSIBLE INSERTION LANDING CRAFT (SILC), AND A 40-NIETEIZ
LCW HULL. (SWN)
TWO NEW VESSEL CLASSES UNDER CONSTRUCTION AT 25X1
WONSAN WERE IDENTIFIED AS PROBABLE LCWS. THE FIRST, A 26-METER
LCW WAS PRESENT AS EARLY (GRAPHIC 2). TILE 25X1
VESSEL IIAS A A BOW WHICH IS LONG AND TAPERS 25X1
SHARPLY, AND A RAISED AFT DECK. THE WEATHER DECKS, BOTH FORE
AND AFT OF THE PILOT HOUSE, ARE NOTICEABLY VOID OF STRUCTURES
AND DECK CLUTTER. AN OBLIQUE VIEW OF TWO 25X1
UNITS OF THIS CLASS REVEALED THAT EACH HAD A PROBABLE STERN
RAMP (INSET, GRAPHIC 2). THIS FEATURE IN CONJUNCTION WITH THE
RAISED AFT DECK SUGGESTS THE BOAT HAS THE CAPABILITY TO
TRANSPORT AND LAUNCH SMALLER CRAFT. THE VESSEL, WITH ITS HULL
DESIGNED FOR SPEED, COULD BE VERY EFFECTIVE IN THE RAPID
DEPLOYMENT OR WITHDRAWAL OF AGENTS OR SMALL AGENT CRAFT. (SWN)
THE HULL OF THE SECOND NEW CLASS PROBABLE LCW WAS ALSO ON THE
BUILDING WAYS THE 40-METER HULL HAS A BEAM OF 7 25X1
METERS. ITS SUPERSTRUCTURE AND WEATHER DECK REMAIN
INCOMPLETE. THE APPEARANCE OF THE HULL IN LATE 1982 COINCIDES
REFERENCING A UNIT OF SIMILAR DESIGN 25X1
REPORTED TO BE UNDER CONSTRUCTION AT THIS YARD. THAT VESSEL
These notes have been prepared for briefing purposes only and should not be used for detailed analytical 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
IN I ILLIOI NCI SOMICrS
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Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101350001-7
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Copy
Attachment to Z-18033/84
NPIC/I1:G (04/84)
9 APRIL L)84
WAS DESCRIBED AS AN APPROXIMATELY 50-METER LCW WITH A 7-METER
BEAM, WHICH WAS TO BE DISGUISED AS A JAPANESE FISHING BOAT. IT
WAS TO BE FITTED WITH SUFFICIENT ARMAMENT TO OPPOSE ANY SOUTH
KOREAN NAVAL SHIPS IT MIGHT ENCOUNTER WHILE TRANSPORTING AGENTS
OR SMALLER AGENT CRAFT IN HOSTILE WATERS. CONSTRUCTION WAS
REPORTED TO HAVE BEEN HALTED UNTIL HIGH-SPEED ENGINES COULD 131;
ACQUIRED FOR THE BOAT. (SWN/NF)
THE THIRD VESSEL CLASS IDENTIFIED
25X1
25X1
VERY SIMILAR TO A CAPTURED SEMI-SUBMERSIBLE SDV, APPROXIMATELY
(INSET). SDV ARE USED TO TRANSPORT AGENTS 25X1
FROM A LARGER "MOTHER SHIP" TO A BEACHHEAD. THIS LARGER CRAFT
APPEARS SUITED FOR THE SAME MISSION, BUT WITH AN OBVIOUS
INCREASE IN PERSONNEL DELIVERY CAPABILITY. (SWN)
THE FOURTH NEW CLASS OF PROBABLE AGENT-ASSOCIATED CRAFT
IDENTIFIED AT WONSAN WAS PRESENT AS EARLY 25X1
(GRAPHIC 3). 25X1
ENABLED ITS IDENTIFICATION AS A
SEMI-SUBMERSIBLE INSERTION LANDING CRAFT (SILC). THE SILC IS
MORE SOPHISTICATED THAN THE SDV, ALTHOUGH ITS ROLE IS
ESSENTIALLY THE SAME. THE CRAFT HAS INBOARD/OUTBOARD PROPELLER
HOUSINGS FOR THREE ENGINES. THESE PROVIDE FOR SUBMERSED SPEEDS
OF UP TO 12 KNOTS AND A RANGE OF 300 MILES.
THE SILC CARRIES WEAPONS, AMMUNITION, A RADIO, A SMALL RADAR,
AND A SELF-DESTRUCT EXPLOSIVE CHARGE. (SWN/NF)
25X1
THE WONSAN SHIPYARD HAS BEEN ASSOCIATED WITH THE CONSTRUCTION
AND REPAIR OF AGENT-ASSOCIATED BOATS FROM IMINT SINCE TIME EARLY
1970'S AND IS DESIGNATED THE 313TH LIAISON OFFICE 25X1
THE SHIPYARD HAS UNDERGONE A CONSIDERABLE TRANSFORMATION SINCE
THE LATE 1970'S. IN ADDITION TO THE CONSTRUCTION OF BOTH THE
OLDER AND THESE NEWER CLASSES OF AGENT BOATS, A SUBSTANTIAL
INCREASE IN FLOORSPACE DEDICATED TO CONSTRUCTION AND REPAIR WAS
COMPLETED IN MID-1982. IN LATE 1978, CONSTRUCTION BEGAN ON A
These notes have been prepared for briefing purposes only and should not be used for detailed analytical 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
INTFLLIGENCE SOURCES
UII Mr7110OS INVOLVED
SECRET
NOFORN
Declassified in Part - Sanitized Copy Approved for Release 2012/03/02 : CIA-RDP84T00491 R000101350001-7
 Declassified in Part - Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101350001-7
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(c) NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
Page 3 of 3
Copy
Attachment to Z-18033/84
NPIC/IEG (04/84)
9 APRIL 1.984
NEW BUILDING HALL. BY MAY 1979, THE NEW HALL WAS COMPLETED,
ADDING 3,345 SQUARE METERS OF FLOORSPACE TO THE APPROXIMATELY
1,200 SQUARE METERS OF THE OLDER FABRICATION/REPAIR BUILDING.
CONSTRUCTION CONTINUED WITH EXPANSION OF THE ORIGINAL STRUCTURE
AND WAS COMPLETED IN MID-1982. THE SHIPYARD BUILDING HALL
FLOORSPACE HAS BEEN INCREASED BY APPROXIMATELY 500 PERCENT AND
NOW TOTALS 7,680 SQ METERS. (SWN/NF)
ANALYST'S COMMENT: THE VARIETY OF AGENT VESSELS CONSTRUCTED
HERE, AND THE INCREASE IN BUILDING HALL FLOORSPACE MAKES WONSAN
THE LARGEST SHIPYARD DEDICATED TO THE CONSTRUCTION OF AGENT
VESSELS IN NORTH KOREA. IT ALSO ADDS TO THE INCREASING AMOUNT
OF EVIDENCE THAT SUGGESTS THE NORTH KOREANS ARE PLACING
SIGNIFICANT EMPHASIS ON THEIR INFILTRATION EFFORTS TOWARD SOUTII
KOREA. (SWN)
3. I (COORDINATES 39-09-33N 127-26-44E (S)
4. COLLATERAL REFERENCES: DET 32 PSAA SEOUL KOREA//INO//, DTG
030330Z MAR 84, IIR 1 512 0021 84, NORTH KOREAN CONSTRUCTION OF
AGENT OPERATIONAL BOAT (U) (C/NOFORN)
52411-1 MI BN, 501ST MI GP, 840201, IIR 2 221 0046 84,
SEMI-SUBMERSIBLE INSERTION LANDING CRAFT (SILC) (U) (C/NOFORN)
25X1
25X1
These notes have been prepared for briefing purposes only and should not be used for detailed analytical 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
INTI-I.LIGENCE SOURCES
Oil MI 1110Db INVOLVED
SECRET
NOFORN
Declassified in Part -Sanitized Copy Approved for Release 2012/03/02: CIA-RDP84T00491 R000101350001-7