CHICOM-PRODUCED INFILTRATION SHIPS AT HAIPHONG INFILTRATION SUPPORT BASE

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T04759A008500010048-2
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 9
• Document Creation Date: December 28, 2016
• Document Release Date: September 22, 2003
• Sequence Number: 48
• Publication Date: September 1, 1968
• Content Type: MEMO

Appro:UI Fo U T? 2003/12/18: CIA-RDP78TO4759AO08500010048-2
PHOTOGRAPHIC INTERPRETATION MEMORANDUM
CHICOM-PRODUCED
INFILTRATION SHIPS AT
HAIPHONG INFILTRATION
SUPPORT BASE
Declass Review by NIMA / DoD
GROUP 1 EXCLUDED FROM
AUTOMATIC DOWNGRADING
AND DECLASSIFICATION
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CHICOM-PRODUCED INFILTRATION SHIPS AT HAIPHONG INFILTRATION SUPPORT BASE
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Recent low-level photography over Haiphong, North Vietnam, revealed
the presence of two Chinese-produced infiltration vessels at the Haiphong
Maritime Hospital, which appears to be a support base for the North Viet-
namese 125th Infiltration Squadron. The two classes of vessels have been
designated as small logistics (SL)-type units, to connote cargo vessels
used in resupply and infiltration. The class designations of these two
units are SL-2 and SL-3.
Three types of Chinese-produced SL vessels have been observed in North
Vietnam. The first unit to be observed was the SL- hick was identified
retrospectively as being at Haiphong during The second class 25X1 D
of infiltration vessel supplied was the SL-l , a larger vessel built at a
shipyard apparently constructed solely for the production of logistics ves-
sels for North Vietnam. The SL-22 is the latest contribution to the gun
runner fleet, initial deliveries to the North Vietnamese being made during
the summer of 1967.
Although the SL-1 units remained in North Vietnam, the SL-2 and SL-3
vessels operated from Hsinhsing Shih Naval Base, on the northwest corner
of Hainan Island, a base possibly constructed primarily to support infil-
tration operations. It appears that the 125th squadron chose to sortie
infiltration missions from the Hainan sanctuary, rather than risk possible
interdiction along the coast of North Vietnam, and returned to Haiphong
only after the bombing cessation.
The SL-2 (Figure 1), measuring approximately in length and 2 5X1 D
20 feet in beam, is the larger of the two recently observed units. Pres-
ently under serial production at the Luta Shipyard in northeastern China,
the SL-2 is a high speed craft, reportedly capable of about 20 knots. The
SL-2 has three probable twin barrel 14.5 mm heavy machinegun mounts, two
forward concealed under canvas and a third aft concealed under a chicken
coop-like structure. The concealed armament is reminiscent of that used
on 25X6
e SL- figure is a trawler-rigged unit measuring approximately
25X1 D in overall length and 20 feet in beam. It is armed with three 12.7
mm heavy machineguns. Vessels of this class have been intercepted and de-
termined to be of Chinese origin, although no evidence as to the location
of the producing shipyard is available.
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11 - Chicom Shipyard Production Supports North Vietnam, and
NPIC/R-)+167 New Class Probable AKL.
2 Luta Shipyard Builds Gun Runners, Luta, China.
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