UNUSUAL SAM SITE CONSTRUCTION TECHNIQUE HAIPHONG/CAT BI AIRFIELD, NORTH VIETNAM

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP85T00339R000100190002-3
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 4
• Document Creation Date: December 28, 2016
• Document Release Date: February 10, 2009
• Sequence Number: 2
• Publication Date: March 26, 1969
• Content Type: REPORT

Approved For Release 2009/02/10: CIA-RDP85T00339R000100190002-3
Approved For Release 2009/02/10: CIA-RDP85T00339R000100190002-3 -~
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 Approved For Release 2009/02/10 :CIA-RDP85T00339R000100190002-3
CONFIDENTIAL
(c) NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
REFERENCE: BOQ 511
ATTACHMENT TO M-6179
26 March 1969
PAGE 1 of 2
UNUSUAL SAM SITE CONSTRUCTION TECHNIQUE
HAIPHONG~CAT BI AIRFIELD, NORTH VIETNAM
2,_04910N 1064415E
THIS BRIEFING BOARD DEPICTS A SA-2 SAM SITE CONSTRUCTION TECHNIQUE
UTILIZING AIRCRAFT REVETMENTS AS LAUNCH POSITIONS.
HAIPHONG~CAT BI AIRFIELD, HAIPHONG, NORTH VIETNAM.
MISSION BO Q511 OF 14 b1ARCH 1969 REVEALS A SAM SITE CONSTRUCTION TECHNIQUE
IN NORTH VIETNAM AT SITE A14-B (342). THE SITE CONSISTS OF FOUR UNOCCUPIED
RE VETTED LAUNCH POSITIONS AND AN UNOCCUPIED REVETTED CENTRAL GUIDANCE AREA. TWO
OF THE LAUNCH POSITIONS ARE FORMER AIRCRAFT REVETMENTS. A FOURTH WALL HAS BEEN
ADDED TO BOTH REVETMENTS. THE OTHER TWO REVETTED LAUNCH POSITIONS HAVE BEEN
CONSTRUCTED ON A DISPERSAL TAXIWAY.
4. REMARKS:
THE CONSTRUCTION AT THIS NEW SITE HIGHLIGHTS A DEVELOPMENT IN SAM SITE
PREPARATION WHICH WAS FIRST OBSERVED AT SITE 311 (ALSO AT CAT BI AIRFIELD) IN
THIS TECHNIQUE GIVES THE SAM SITE A RATHER CRUDE APPEARANCE IN THAT 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 boards (s) they were prepared for and must be considered valid only for the re?
porting period as indicated by the date of issue. For information concerning these notes contact Chief, Imagery Exploitation
Group NPIC.
GROUP 1~ E%C LUDED FROM
AU 70M ATIC DOWNGRADING
AND DECLASSIFICATION
CONFIDENTIAL
Approved For Release 2009/02/10 :CIA-RDP85T00339R000100190002-3
 Approved For Release 2009/02/10 :CIA-RDP85T00339R000100190002-3
CONFIDENTIAL
(c) NATIONAL PHOTOGRAPHIC INTERPRETATION CENTER
REFERENCE: BOQ 511
ATTACHMENT TO M-6179
26 March 1968
PAGE 2 of 2
BY NOT USING HEAVY EQUIPMENT SUCH AS BULLDOZERS AND EARTH MOVERS THE WALLS OF
THE REVETMENT APPEAR MUCH THIlVNER AND NOT AS HIGH AS THOSE AT EARLIER SAM SITES.
SITE 341, LOCATED SOUTH OF HAIPHONG, IS ANOTHER EXAMPLE OF THE USE OF THIS CRUDE
CONSTRUCTION TECHNIQUE.
THE AIRCRAFT REVETMENTS AT SITE 342 HAVE BEEN SPECIALLY MODIFIED TO
PROVIDE SIMILAR PROTECTION AND ACCESS AS THAT AFFORDED BY A NORMAL LAUNCH POSITION.
SITE 311, A FOUR POSITION SITE, USED ONLY ONE MODIFIED AIRCRAFT REVETMENT, AND
SITE 220 UTILIZED THE OPEN ENDED AIRCRAFT REVETMENTS WITH NO MODIFICATIONS.
THE RELATIVELY CRUDE CONSTRUCTION OF SITES 341 AND 342 COUPLED WITH THE
RECENT OBSERVATION OF A DUMMY SITE AT HAIPHONG~CAT BI AIRFIELD AND ONE THREE NM
SOUTH OF CAT BI, MAY BE AN ATTEMPT ON THE PART OF THE NORTH VIETNAMESE TO PRESENT
THE TWO NEW SITES HAVE NOT BEEN 25X1
OBSERVED OCCUPIED; HOWEVER, THEY COULD EASILY BE USED AS OPERATIONAL SITES.
ANOTHER CONSTRUCTION TECHNIQUE WAS RECENTLY OBSERVED AT SAM SITE N0. 15
IIV THE HANOI AREA. THE SITE WAS BEING FURTHER HARDENED BY PLACING EMPTY SA-2
MISSILE CANNISTERS AROUND THE GUIDANCE AREA. (NPIC BRIEF IlVG BOARD M-507)
MAP REF: SERIES L7014, SHEET 6350 IV, 1ST ED. (1:50,000) XJ80802g
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 boards (s) they were prepared for and must be considered valid only for the re?
porting period as indicated by the date of issue. For information concerning these notes contact Chief, Imagery Exploitation
Group NPIC.
CONFIDENTIAL
Approved For Release 2009/02/10 :CIA-RDP85T00339R000100190002-3
 Approved For Release 2009!02110 :CIA-RDP85T00339R000100190002-3
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REPRODUCTION OF THIS DOC-
UMENT IN WHOLE OR IN PART
IS PROHIBITED EXCEPT WITH
THE PERMISSION OF THE
OFFICE OF ORIGIN.
NATfONAL SUBSTANTIVE
BRIEFING AIDS
COLLECTION
RETURN T0:
BRIEFING AIDS UNIT
ROOM 45-441A
Approved For Release 2009!02110 :CIA-RDP85T00339R000100190002-3