COMMUNIST INSURGENCY IN EASTERN CAMBODIA

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04560A006400010042-2
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 43
• Document Creation Date: December 28, 2016
• Document Release Date: April 12, 2000
• Sequence Number: 42
• Publication Date: October 1, 1968
• Content Type: REPORT

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NO FOREIGN DISSEM
COMMUNIST INSURGENCY
IN EASTERN CAMBODIA
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CONF
NPIC/R-114/68
OCTOBER 1968
GROUP 1: EXCLUDED FROM
AUTOMATIC DOWNGRADING
AND DECLASSIFICATION
~lY1lII~T~~~11'FY ~Ib ~2! ~~~~
ApprovecN9$~'19~~ DP78B04560~006~00010042-2
IDENTIAL
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This document contains information affecting
the national defense of the United States,
within the meaning of Title 18, sections
?93 and 794, of the U.S. Code, as amended.
Its transmission or revelation of its contents
to or receipt by an unauthorized person is
prohibited by law.
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 RECEIVED OR ISSUED
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SEC~ION II
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FHO~URE 7. PROBAB LE COMMUTN TlNSURGENT A?T~ Y, CAMBODIA
CONFID~NTIA ~_ ~e~
NO FOREIGN DISSFM
i ~I PROBABLE COMMUNIST INSURGENT
_ _ BASE AREA
~~ CONCENTRATION OF PROBABLE
COMMUNIST INSURGENT ACTIVITY
PROBABLE SUPPLY ROUTE
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 CONFIDENTIAL
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PREFACE
This report provides photographic documentation of activity believed to be that of
Communist insurgents along the eastern Cambodian border between January 1967 and
August 1968. It updates NPIC/R-30/67, Southeast Asia Activity Report, Compendium 36, In-
surgency in Cambodia. The report contains the following five sections, proceeding gen-
erally north-south along the eastern Cambodian border (Figure 1, page ii):
Section I: Tonle Kong and Tonle San (rivers) Waterborne Supply Routes, and Base
Areas 609, 701, and 702.*
Section II: Base Area 704 and the Mereuch Supply Route.
Section III: Base Areas 351, 352, and 353.
Section IV: Base Areas 354, 367, 468, 703, 704, and 705.
Section V: Waterborne Supply Routes, Kampot Province and Gulf of Thailand.
Each section contains alarge-scale map depicting the cumulative intelligence available
from photography on the activity in each area. The text supplements this material by
emphasizing items of particular significance, while the photographs provide examples of
various types of activity.
`'Base areas have been numerically designated by the US Military Assistance Command, L'ietnam (MACV).
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to 100 percent during-Although there was extensive use of other waterways, the traf-
fic on these two rivers is indicative of the levels of insurgent activity, due to the lack of
is directly linked with the previously existing Cambodian road network.
Motorized river craft sightings on the Tonle Kong and Tonle San (rivers) increased 75
Approximately 210 nautical miles (nm) of roads have been recently constructed within
the areas of probable Communist insurgent control, a 300 percent increase in roads since
1966. In addition to numerous iiew motorable border crossings, most of this construction
gent areas.
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There has been a significant increase in the utilization of Cambodian territory by
Communist insurgent forces since early 1967. While most of the activity remains concen-
trated along the Cambodia-South Vietnam border, the greatly expanded logistics network
and the variety of identified facilities indicate that Cambodia has now become a source
of more direct support. An increase in aerial reconnaissance missions and the refinement
of interpretation techniques have contributed to the identification of numerous new areas
of insurgency during this period, bringing the total from 200 to almost 700. Of more sig-
nificance, however, has been the increase in activity in the previously identified insur-
SUMMARY
indigenous activity in these relatively isolated areas.
Stockpiled supplies, including numerous caches of rice and large quantities of crated
supplies, have been detected in open storage along several of the recently constructed
border roads. Although it is difficult to determine from photography what specific type of
imilar depots of this type have been discovered in Laos and South
Vietnam by allied ground sweeps and friendly patrols. At least six of these new open
storage areas have been detected on photography. They are located north of Snoul, near
a Cambodian storage depot north of Kampot, immediately south of Kratie, along a re-
cently constructed road near the Tonle San (river), adjacent to a newly constructed road
extending to the South Vietnam border east of Lomphat, and in Base Area 351 (northeast
of Budop, South Vietnam).
The expansion of Communist insurgent areas during 1967 and 1968 was characterized
by an increasing emphasis on storage and support facilities. Bunkered storage areas
(possibly for munitions), extensive open storage for rice, and assault training facilities
resembling South Vietnamese military fortifications were identified for the first -time.
The greatest increase in facilities was reflected in the "Parrot's Beak" area of Svay
Rieng Province, 25 nm west of Saigon, where approximately 150 buildings associated with
Communist insurgent activity in 1966 had been expanded to more than 1,100 buildings by
- At present, hundreds of defensive positions are located within this tri-base
complex.
In southeastern Cambodia during- photography revealed a road and waterborne
logistics route between Ton Hon and Sroc Chuch, Cambodia, and the Vinh Te Canal in
nearby South Vietnam. The east-west oriented canal forms the final link in what is
apparently the most active supply artery between southern Cambodia and the Communist
insurgent forces operating in the Mekong Delta of South Vietnam.
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SECTION I
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 / BAN KHLONG~ ?~
~~wwr~'"
TOME ~~1Gfi34JCr,(RI'N~R).
,~ ~..'''
M=. ~
TONLE;9REPOK (RIVER),.
~CAM$001A Mld;, ACTT ITY '- -
- AB? IbT IN URGPNT, ACTI VITY INC2UDING ENCAMPME NTb .
~'p~~~ND T A~S$It11 MENT FACILITI~ BIVOUAC AND S'[AGING, ;.
ARE..~,5, ROVSJJN ENT AGRICULTURAL AkEAb, EYAIbpN AND WAY
9l'/4XJ0 D DEF'~NSIV 'POS/TION3
?t yRCp~,((g$E'$VI~PLY $$ppAVT?,bUPpOR'71NG COMMUNIST INSURGEIAT ACTIYITY
-~--- METU+T OET$~TE?#'RUAQ$; ND TRAILS- ,_
--r---nROA#}b ANO TkA`I~(,5e ..
FIGURE S'~~:.,ZONLE KON~A'A 7ERBORNE SVPPIY ROUTE, BASE AR
I _4_?,
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BASE AREA 701
(PREK DRANG)
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SERIES 1501 (AIR)
SHEETS ND 48-7, 4&8,
48-11 &.48.12
2ND EDITIONS
SCALE 1:250,000
NP(C IC=11'1flB
PLEIKU
APPROXIMATELY 2 NM
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SECTION I
Tonle Kong Waterborne Supply Route 25X1 D 25X1 D 25X1 D
The Tonle Kong continues to be a vital link in the Communist supply route between
Cambodia and South Vietnam (Figure 2). Analysis of more than 300 photographic mis-
sions between and reveals a steady increase in the number of
motorized craft utilizing the river between Stung Treng, Cambodia, and the Communist
road network inside southern Laos. Recorded observations in ,for example,
revealed asingle-day high of .127 craft, as compared to a single-day count of 61 craft in
-. The overall increase in waterborne logistics activity since ~ is approximate-
ly 75 percent. 25X1 D 25X1 D
At present, motorized river craft (Figure 4) traveling between the storage and trans-
shipment facilities at both Ban Kan Memay (Figure 3) and Ban Khlong near Stung
Treng and Siempang utilize the main channel and travel in convoys of eight to 16 at
approximately four mph (Figure 5, left photo). After passing Siempang, the craft move in
groups of two, three, or four. Many are camouflaged and all travel as close to the river
bank as the prevailing water depth will allow (Figure 5, center and right photos). When
the craft approach the Laos border, small pirogues escort the craft to one of six trans-
shipment areas along the east (Cambodia) bank of the river, adjacent to the reactivated
segment of Route 97.
Additional facilities in direct support of the waterborne activity include 11 river in-
surgent security posts dispersed along the west (Laos) side of the river and four probable
truck parks and three probable storage areas located along the service roads between
Route 97 and the transshipment points.
Laos Route 110, which extends east from Route 97 in Cambodia, was open throughout
with the exception of approximately four to six weeks during the peak mon-
soon season. This is in contrast to the major north-south routes in Laos (Routes 92 and
96), which were closed during the monsoon season for approximately four months in
each year. In Route 110 was extended east into the Cambodia tri-bor-
der area, with one branch continuing northeast to a junction with South Vietnam Route
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FIGURE 3. RECENTLY CONSTRUCTED STORAGE AREA WITH MOTORABLE ACCESS TO THE MEKONG RIVER, BAN KANG
MEMAY, CAMBODIA.
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512. The other branch continues south inside Cambodia for approximately 10 nm, crosses
the border into South Vietnam, and continues south to the vicinity of an abandoned allied
artillery base. 25X1 D
Base Area b09
The tri-border Base Area 609 was first identified on photography in- and has
probably served as a redistribution point for personnel and supplies into South Vietnam
since that time. With the extension of the motorable network directly into South Vietnam,
however, the need for such facilities in this location has probably decreased. Although
new truck parks have been identified, there is some photographic evidence that the stor-
age and bivouac functions have been at least partly transferred to adjacent areas in
South Vietnam. 25X1 D
Base Areas 701 and 702
The contiguous Base Areas 701 and 702 extend approximately 55 nm along the
Cambodia/South Vietnam border and into Cambodia to an approximate depth of 20 nm.
As of approximately 253 areas of probable insurgent activity had been identi-
fied, including: open rice storage facilities; storage buildings; bivouac and staging fa-
cilities; truck parks and transshipment points; liaison or way stations; a rocket or mortar
training area; extensive non-indigenous agriculture; and numerous foxholes, trenches, and
automatic weapons positions. Approximately 40 percent of the areas previously identified
in Base Area 701 which include these activities, and 80 percent of those in Base Area 702,
remain active.
Motorable roads have been recently constructed into both base areas. A new 22-nm
road (designated Route 1944) extends northeast from Route 194, across the Tonle San and
into the northern sector of Base Area 702. Since this road has been heavily
used by trucks and four motorized river craft have been observed ferrying supplies at the
river crossing. Heavy track activity was detected on Route 1944 north of the Tonle San in
suggesting the presence of tracked vehicles. Figures 6 and 7 show the ex-
tensive development of support and storage areas in the border region.
During a newly constructed road was observed between Lomphat and
Base Area 701. The road extends approximately 30 nm through a suspect Communist in-
surgent support area at Kamong Chong, continuing past a Cambodian military camp, and
terminating at the Prek Drang (stream). There has been increasing vehicular use of the
road since and since heavily used trails have been observed
extending from its terminus east into South Vietnam and north to a probable Communist
insurgent base camp (Figure 8).
Recorded observations of motorized river craft on the Tonle San between Virachey
and the transshipment points in Base Area 702 increased from asingle-day high of 18 to
36 craft observed in -Craft were also observed transporting supplies from as far
down river as Khsach Thmei, approximately 25 nm southwest of Virachey. Between -
the river traffic declined by at least 50 percent. This rapid
decline during the peak shipping season is possibly explained by the completion of
Route 1944 into the area.
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TYPE A MOTORIZED RIVER CRAFT
CAPACITY: 1.5 TO 2 METRIC TONS
SPECIFICATIONS: 20 TO 25 FEETL.O.A
APPROXIMATE NUMBER IN SERVICE: 74*
TOTAL FLEET TONNAGE: 148(MT)
PROBABLY CAMBODIAN
TYPE B MOTORIZED RIVER CRAFT
CAPACITY: 2.5 TO 3 METRIC TONS
SPECIFICATIONS: 25 TO 35 FEET L.O.A
APPROXIMATE NUMBER IN SERVICE: 47*
TOTAL FLEET TONNAGE: 141(MT)
PROBABLY CAMBODIAN
TYPE C MOTORIZED RIVER CRAFT
CAPACITY: 3.5 TO 5 METRIC TONS
SPECIFICATIONS: 35 TO 45 FEET L.O.A.
APPROXIMATE NUMBER IN SERVICE: 16'
TOTAL FLEET TONNAGE: 80(MT)
PROBABLY CAMBODIAN
TYPE D MOTORIZED PIROGUE
SPECIFICATIONS: 15 TO 25 FEET L.O.A.
NOT INCLUDED "
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FIGURE 6. PROBABLE TRUCK PARK AND STORAGE AREA, RATANAKIRI PROVINCE, CAMBODIA. The probable storage
buildings were constructed in
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FIGURE 7. PROBABLE COMMUNIST INSURGENT ENCAMPMENT, BASE AREA 702~TONLESAIJ~, CAMBODIA. The camp
is possibly used as a headquarters and support area.
FIGURE 8. PROBABLE COMMUNIST INSURGENT BASE CAMP AND ASSOCIATED DEFENSES, BASE AREA 701 (PREK
DRANG~, CAMBODIA. The heavily used trails in the area continue east into South Vietnam.
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SECTION II
II
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MEREUCH \ ~
REACTIVATED SEGMENT
OF UNNUMBERED ROAD
CAMBODIA
? PROBABLE COMMUNIST INSURGENT ACTIVITY
? CAMBODIAN MILITARY INSTALLA
??NEW ROADS AND TRAILS
- -ROADS AND TRAILS
ROUTE 141
NORTH
VI ETN AM
(FIG. 12)
BASE AREA 740
e
0 RANG _ ~ DA DAM
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(FIG. 10)
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_
ROUTE 14
,
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SHEET ND 48.16 ~,......~ ? _ . __ . __ . _ ._ _ _
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SECTION II
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Base Area 740
Throughout wand the first eight months of -there was considerable evidence of
increased logistics support in southeastern Mondulkiri Province, particularly in Base Area
740 (Figures 9-12), and in the vicinity of Mereuch.
Approximately 60 areas of probable Communist insurgent activity, including base
camps and storage areas, have been identified within Base Area 740. A maj or portion of
the activity is concentrated near the eastern terminus of a road system constructed be-
tween The unnumbered road (Figure 13) has been extended . to
within 2.5 nm of the South Vietnam border, where it terminates in a vehicle turnaround.
Heavily used trails continue east, cross the South Vietnam border, and intersect Routes
6B and 14. ~:
Although the Cambodian strongpoint at Mereuch has remained active during the
past four years, the service road which connects it-~to Route 141 was abandoned in early
major portions of this service road were reactivated
A new road was observed extending south from Mereuch in ~ paralleling the
Tonle Srepok (river), and terminating in a transshipment area 1.8 rrun west of the border.
From this point, trails extend east into South Vietnam and south into Base Area 740.
and subsequently revealed signs of heavy vehicular use.
-. ,
v~ UNNUMBERED ROAD
FENCE-SECURED LIAISON
SUPPORT AREA
??, ~? ~ ~
ROW CROPS WITHIN *, '~~ `'
SECURED AREA ~ ~ ~-
FIGURE 10. PROBABLE COMMUNIST INSURGENT LIAISON AND SUPPORT AREA, SOUTHEASTERN MONDULKIRI PROVINCE,
CAMBODIA.
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FIGURE 1 1. PROBABLE INSURGENT ENCAMPMENT AT THE BASE OF NAM LYR MOUNTAIN, BASE AREA 740, CAMBODIA.
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FIGURE 12. PROBABLE CAMBODIAN RICE STORAGE AREA, SOUTHEASTERN MONDULKIRI PROVINCE, CAMBODIA.
FOUR BUI~DiNGS
rr
FIGURE 13. NEWLY COMPLETED ROAD SEGMENT AND TRANSSHIPMENT AREA, BASE AREA 740 (NAM LYR MOUNTAIN,
CAMBODIA. This vehicle turnaround is 2.5 nm from the South Vietnam border.
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SECTION III
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SERIES 1501 (AIR)
SHEETS NC 48-3, NC 4$,4
ND 48-15 & ND 48-16
1ST EDITIONS
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ROUTE 75
KREK
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~~~ ROADS AND TRAILS
~t PROBABLE SUPPLY RDUTE
[FiG. 20)
BINH LONG PROVINCE / 25X1 D
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I' ~
i-- BASE AREA 352
CAMBODIA
ROUTE 131
[FIG.IBj
o? ~~ ~(~ (FIG. lbj
,NPJC M-4679
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SECTION III
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Base Areas 351, 352, and 353 25X1 D 25X1 D , 25X1 D
Between and the level of probable Communist insurgent
activity along the southern borders of Mondulkiri, Kratie, and eastern Kompong Cham
provinces increased threefold (Figure 14). In terms of road construction alone, 105 nm of
newly cleared roads, including 11 motorable border crossings were detected in More
than 150 areas of probable Communist insurgent activity were identified'in ~ compared
to 45 in_ 25X1 D
The O'Moha Infiltration and Storage Complex (Base Area 351) is probably the most
important base area located along this segment of the Cambodia-South Vietnam border.
During _ awell-concealed road was constructed from near the southern terminus of
Route 14 into South Vietnam. The original 6-nm segment was expanded in ~ (Figure 15)
to a network of approximately 56 nm of motorable roads.
Forty-two areas of probable Communist insurgent activity were identified during this
period, including: 12 probable encampments; four probable truck parks or transloading
areas (Figures 16 and 17); six probable storage areas, one of which is heavily defended and
bunkered (Figure 18); numerous defense positions, including probable rocket or mortar
training sites; and extensive row crop areas.
Between Base Areas 351 and 352, two new major motorable roads cross into South
Vietnam. One by-passes a Cambodian border post southeast of Snuol, crosses into Binh
Long Province and connects with Route 13 ,approximately 4 nm north of the provincial
capital, Loc Ninh. The second road (Figure 19) is 12 nm long and forms an important link
between Cambodian Route 131 and South Vietnam Route 14A. It was apparently built in
less than two months. Figure 20 is a classic example of the close proximity between a
probable Communist insurgent facility, an occupied Cambodian border post, and an open
storage area containing hundreds of sacks of rice. The rice, stockpiled less than 200 yards
from the border post and 1,100 yards from a liaison or 'way station, is excessive for the
small outpost.
Base Area 352 extends south from the Snuol plantation area in Cambodia to the north-
eastern quadrant of War Zone "C". The bulk of the probable Communist insurgent activ-
ity is concentrated along a 20-nm segment of the Cambodia-South Vietnam border, which
has anorth-south orientation in this area. Cambodian Routes 7 and 13 are tkie major ve-
hicular arteries from which 11 unnumbered roads provide access to ~ several of the the
surgent facilities detected along the border. Between
original 14 facilities expanded to approximately 40, including rocket or mortar positions and
associated defense positions. Photography also revealed heavy track activity with asso-
ciated spoil, suggesting the presence of tracked vehicles within Base Area 352.
At least 95 percent of Base Area 353 is in South Vietnam with the remainder in the
border section of southern Kompong Cham province. Several motorable border crossings,
associated trails, and temporary bivouac areas are the only significant items observed on
photography during 25X1 D 25X1 D ---
FIGURE 15. RECENTLY DETECTED ROAD SEGMENT WHICH JOINS CAMBODIA ROUTES 14 AND 131 WITH THE COMMU-
NISTINSURGENT LOGISTICS NET IN PHUC LONG PROVINCE, SOUTH VIETNAM.
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~~?~ `SERVICE ROAD
DRIVE-THRU BUILDING OVER ONE OF FIVE
MOTORABLE ENTRANCES TO BASE AREA 351
SECURITY POST
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FENCE-SECURED PROBABLE STORAGE BUILDING
~e... ~
ROUTE 14
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SOUTH VIETNAM
~~
FIGURE 19. NEW UNNUMBERED ROAD EXTENDING FROM CAMBODIA ROUTE 131 TO SOUTH VIETNAM ROUTE 14A IN
NEARBY BINH LONG PROVINCE.
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-,-
PROBABLE BUNKERED
STORAGE FACILITY UIC
FENCE- SECURED_?
PROBABLE STORAGE AREA
FIGURE 18. HEAVILY DEFENDED PROBABLE STORAGE AREA, BASE AREA 351, CAMBODIA.
VEHICLE TRACKS
a~~~~
~ ~` P
CAMBODIA I"
R . ~ ~r
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SECTION IV
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 00/0
STOENG y
TAKEV
~STREAM~
? /f TRAINING FACILITIES - 1? ~
?!_ ~~~ ? Y ?~ ? ?
? ?? ? ? ?i? S ~ ??
?~ ? ?? ?~?? i~ ~?
IFIG. 25)
BUNG VEN ??
SECRET ZONE
L.~ ~ FIGURE I7. BASE AR\354, 367, 468, 703, 704 AND 705, CAMBODIA.
BASE AREA 705 ~ _ ~ _ s ~ \~~~ ~.
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RACH CAI
BAC RIVER
~\
SVAY RIENG
SHEETS NC 48-6, ND 48-6
ND 48-12 & ND 48-16
1ST EDITION
SCALE 1:250,000
? PROBABLE COMMUNIST INSURGENT ACTIVITY
? CAMBODIAN MILITARY INSTALLATION
- ROADS AND TRAILS-
--- ROADS AND TRAILS
~s PROBABLE SUPPLY ROUTE
n~sEMON,F(p~N`~IAlat,,,;, ~-:
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Base Area 354
SECTION IV
Approximately 35 areas of probable Communist insurgent activity have been observed
within the western (Cambodian) portion of Base Area 354 (Figure 21). The activity is
generally concentrated along the Rach Cai Bac (stream), which forms the Cambodia-
South Vietnam border in this area (Figure 22), and the connecting Prek Kompong Spean
(river) which extends west into Cambodia, perpendicular to the border.
River traffic along this probable waterborne supply network increased significantly
during the latter part of Many of the craft had canvas-
covered cargo and appeared to originate from one of the eight transshipment points iden-
tified along the Prek Kompong Spean.
In addition to the transshipment points, storage areas, and truck parks associated with
the waterborne activity, a possible Communist insurgent headquarters area has been lo-
cated approximately 2.5 nm west of the border. Numerous buildings, partly concealed by
a heavy tree canopy, are interconnected by a maze of trails and cart tracks. The heavily
defended area is partially surrounded by log and earthern barricades, with a series of
probable security posts along the adjacent segment of the Rac Cai Bac.
Base Areas 367, 468, and 703
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These base areas are located in the "Parrot's Beak" sector of southeastern Svay Rieng
Province, 25 nm west of Saigon. Hundreds of defense positions, bunkered storage facilities,
and training areas were identified within this tri-base complex during-(Figure 23). The
area now contains approximately 1,100 buildings associated with the probable Communist
insurgent activity, as compared to approximately 150 iri ~ The area is believed to be
used by the Communists as a major springboard for attacks launched against Saigon.
Base Area 704
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This base area is located along the Cambodia-South Vietnam border in the vicinity of
the Mekong and Bas~ac Rivers. While long associated with waterborne insurgent activity, it
FIGURE 22. TRANSSHIPMENT POINT, BASE AREA 354, CAMBODIA-SOUTH VIETNAM BORDER. Pack animals are prob-
ablycarrying supplies to the border.
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appeared to be used primarily for the training and temporary encampment of large num-
bers of Communist personnel during- 25X1 D 25X1 D
Between numerous defense positions, encampments, and storage
buildings were constructed along the Prek Bac Nam (stream) in the "Bung Ven Secret
Zone." Elaborate training sites, built to simulate South Vietnamese fortifications, were
subsequently identified in the area during - (Figure 24). By late
these sites had been abandoned and extensive newly established bivouac areas (Figure 25)
and fortifications had been identified in the vicinity of Hong Ngu and Chau Doc, South
Vietnam.
The amount of suspect waterborne activity in the area continued to increase during
_ particularly on the Prek Bac Nam between Kampong Kong and four transshipment
points near the border. An even greater increase was observed on the Stoeng Takev
(stream) which extends from Takeo into the southeast corner of the base area. A maxi-
mum single-day total of 18 craft was sighted on the Stoeng Takev between the village of
Kbal Pou and the border during
Base Area 705 25X1 D 25X1 D
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Located in the vicinity of Bachieu Mountain, this base area is believed to consist
mostly of open and sheltered storage facilities. The heavy tree canopy and rocky terrain
preclude an accurate estimate of the current level of Communist insurgent activity; how-
ever, 15 suspect areas have been identified within a 25-sq-nm area. Of particular signifi-
cance are the large numbers of rice sacks dispersed within some of the areas (Figure 26).
Comparative photography during ~ revealed the location of a possible ammunition
storage depot within a secured area in the village of Neasakiri, where one storage-type
building was dismantled and two possible storage bunkers were constructed. The land-
scaping at this facility is unusual for a Cambodian military installation. The use of a
star configuration directly in front of the administration building has not been observed
at any of the more than 300 Cambodian installations identified throughout the country.
Defenses were constructed prior to At present, a combination of probable
vehicle or cart tracks and awell-used trail extend south from this area into neaby South
Vietnam.
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t BUILDING
TRAINING FACILITY ABANDONED E
:;.,.'ELr' -'SC~~. MOTORIZED RIVERCRAFT i
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SECTION V
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CAMBODIA
AMS SERIES L7011
SHEET 5942 1V
1ST EDITION
SCALE 1:'50,000
POU TA SU
RIVER
SOUTN VIETNAM
PHNOM PENH/KAMPOT RAIL LINE
ROUTE 16
nonnrannn~ nna~_2
(=F1G. 31)
~ CAMBODIAN BORDER POST
? PROBABLE COMMUNIST INSURGENT ACTIVITY
fs PROBABLE ROAD&WATERBORNE SUPPLY ROUTE
~ PROBABLE TRANSSHIPMENT AREA
/1/` MAJOR WATERWAY
--- MAJOR TRAIL
-~- CART TRACKS
SUSPECT STORAGE AREA
HON CHONG PROMONTORY
XOM BA
~ TRAI
AMS SERIES 1501 (AIR) FIGURE 27. TON HON WATERBORNE SUPPLY ROUTE, CAMBODIA
SHEET NC 48-6 - 34 -
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AMS SERIES U011
SHEET 5942 IV
1ST EDITION
SCALE 1:50,000
SCROC CHUCH:~~,~'~ (FIGROO STORAGE BUILDINGS
`~~ ?
1 ~ _
_~ a PREK TNAOT
POU TA SU ~ ~~_ / (STREAM)
RIVER
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CAMBODIA
SOUTH VIETNAM
PHNOM PENH/KAMPOT RAIL LINE
ROUTE 16
CAMBODIA
SOUTH
VIETNAM
...(FIG: 31)
? CAMBODIAN BORDER POST
? PROBABLE COMMUNIST INSURGENT ACTIVITY
fs PROBABLE ROAD&WATERBORNE SUPPLY ROUTE
~ PROBABLE TRANSSHIPMENT AREA
/1/` MAJOR WATERWAY
---- MAJOR TRAIL
- ~ - CART TRACKS
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SUSPECT STORAGE AREA
HON CHONG PROMONTORY
AMS SERIES 1501 (AIR) FIGURE 27. TON HON WATERBORNE SUPPLY ROUTE, CAMBODIA
SHEET NC 48-6 A roved For Release 20 34 DP78B04560A00~~~0042~
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SECTION V 25X1 D
Waterborne Supply Routes, Kampot Province and Gulf of Thailand
There is a strong probability that the road and waterborne supply route through
southeastern Kampot Province is linked with supplies shipped to the port of Sihanouk-
ville, then overland via Kampot, Ton Hon, and the Vinh Te Canal in nearby south
Vietnam (Figures 27 and 28) .
Analysis of photography through has revealed large motorized river craft
(3- to 5-metric-ton capacity) navigating the Ton Hon and Pou Ta Su (rivers) between the
villages of Ton Hon and Sroc Chuch (Figure 29), circumventing the western terminus of
the Vinh Te Canal possibly to avoid detection by several South Vietnamese border facili-
ties in the area. Several transshipment storage areas and encampments have been observed
within this area (Figure 30). Smaller sampans have been observed on the Prek Ansa and
Prek Tnaot (streams), which cross the South Vietnam border.
The east-west oriented Vinh Te Canal (extending 34 nm between the Ton Hon River
and Chau Doc, South Vietnam) is the final link in this major waterborne artery that
serves the Mekong Delta of South Vietnam. Four transshipment facilities-have been
identified along a 2.5-nm segment of this canal. Boat slips have been carved out ~of the
canal banks in two of these areas to expedite the transloading process.
Another suspected waterborne logistics route exists between the Cambodian mainland 25X1 B
in the Sihanoukville-Ream area and the Hon Chong Promontory in South Vietnam. The 25X1 B
suspected terminus could be several storage-type buildings and associated defense pos>.-
tions near the village of Xom Ba Trai.
Several possible storage areas have been observed on the islands of Kaoh Seh (Fig-
ure 31) and Kaoh Angkrang in the Gulf of Thailand. Each of these islands contains
several partially concealed buildings, probably constructed during late S and a possible
open storage area. A lack of supporting indigenous activity, including native agriculture
and fishing, makes these islands highly desirable as storage :depots in an intergrated
waterborne supply route.
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FIGURE28. ONE OF FOUR TRANSSHIPMENT FACILITIES LOCATED ON THE VINH TE CANAL, CHAU DOC PROVINCE,
SOUTH VIETNAM. Cart tracks extend north into Cambodia to the Prek Tnaot (Riven.
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TO TON HON RIVER
~APPROX 1.4 NM
TRANSSHIPMENT AREA
~~ ~ ,,, ~
i
POU TA SU .(RIVER}~~ -~
~r~
d :.~
u ?;
? ~` k
~~
FIGURE 29. THE TERMINUS OF THE TON HON WATERBORNE LOGISTIC SEGMENT, SROC CHUCH, CAMBODIA. The
semiburied bunkered storage facility under construction is identical to one detected under construction in Kratie Province
near Base Area 351.
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VEHICLE/CART TRACKS
HEAVILY USED TRAILS
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FIGURE 30. PROBABLE TRANSSHIPMENT AND STORAGE AREA ALONG THE TON HON RIVER.
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FIGURE 31. POSSIBLE STORAGE FACILITY, KAOH SEH (ISLAND, GULF OF THAILAND, CAMBODIA.
REFERENCES
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