IMAGERY ANALYSIS SERVICE NOTES

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T04759A009900010031-5
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 12
• Document Creation Date: December 28, 2016
• Document Release Date: January 25, 2002
• Sequence Number: 31
• Publication Date: December 3, 1971
• Content Type: NOTES

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DIRECTORATE OF
INTELLIGENCE
Imagery Analysis Service Notes
3 December 1971
Declass Review by NIMA/DOD
CIA internal use only
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17417/71
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The I~fAGF,RI' ANALI"SIS SERVICE NOTES is a periodic publication
of the DDI Imagery Analysis Service, the departmental I'I organization of
CIA.
Phis publication highlights significant or timely intelligence items derived
from photography.
The interpretations in this publication represent preliminary views which
are subject to modification in the light of further information and more
complete analysis.
WARNING
This document contains information affecting the national security of the
United States within the meaning of the espionage laws U. S. Code Title 18,
Sections 793, 794. The law prohibits its transmission or the reve-
lation of its contents in any manner to an unauthorized person, as well as
its use in any manner prejudicial to the safety or interest of the United
States or for the benefit of any foreign government to the detriment of the
United States. It is to be seen only by personnel especially indoctrinated
and authorized to receive information in the designated control channels.
Its security must be maintained in accordance with regt-lations pertaining
to TALENT-KEYHOLE Control System.
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Control System Only CENTRAL I NTELL I GENCE AGENCY 3 December 197 I
Directorate of Intelligence
Imagery Analysis Service
IMAGERY ANALYSIS SERVICE NOTES N0. 29/71
Page
Truck Mobilization Exercise at Chernyakhovsk 2
New Building Construction at Dombarovskiy
SS-9 Warhead Fac i I i ty . 3
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Guided Missile Patrol Boat Seen in South China 5
Mix of Guns Observed in Some AAA Batteries 7
NORTH VIETNAM
New Types of Military Equipment Observed 9
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Truck Mobilization Exercise at Chernyakhovsk
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A probable practice mobilization of cargo trucks was seen at
Chernyakhovsk near the Polish border on satellite pho-
tography. Approximately 1,400 open-bed cargo trucks, mostly ZIL-150's,
were observed in three temporary vehicle parks around the outskirts of
the city. This is the largest concentration of this type ever seen in
the USSR. The trucks were probably mobilized from nearby towns as part 4
of a ground force exercise. This type of mobilization is needed to meet
motor transport requirements during a crisis. Similar mobilizations took
place at a number of locations in the USSR during the Czechoslovakian
crisis in 1968.
The trucks at Chernyakhovsk were parked in groups of about 80,
which is the approximate size of a motor transport company. Most
groups had support vehicles consisting of one GAZ-69, one van truck
and two POL trucks. An additional 180 trucks of various types were
located at nearby ground force installations, which had not been seen
occupied since 1968.
Concentrations of trucks to help with harvesting are often seen
in the USSR during summer months. These usually contain a wide variety
of trucks. By contrast, most of the trucks seen in ~ at Chernyakhovsk
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Guided Missile Patrol Boat Seen in South China
An OSA-class guided missile patrol boat was observed for the first
time on satellite photography in the South Sea Fleet in
The boat was located at Huang-pu Naval Base West, near an on. e on
other OSA si htin s in the South Sea Fleet occured in early
and on manned-aircraft
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photography in the mi - s. s are Curren y being built in the East
Sea Fleet at Shanghai, but there are no indications from photography that 2 5X1 D
they are being constructed in the South Sea Fleet area.
Guided missile patrol boats in the North Sea Fleet are based at areas ~ CX1 B
with underground berthing facilities. Although no such bases are in operati
in the South Sea Fleet, there are areas under construction which could provide
this t e of berthin facility in the future.
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37MM ANTIAIRCRAFT GUN
ZPU?4
ANTIAIRCRAFT HEAVY
MACHINE GUN
PRACTICAL RATE OF FIRE: 80 RPM
MAXIMUM EFFECTIVE RANGE: 8,200 FEET
FIGURE 2. COMPARISON OF ZPU-4 AAHMG AND 37MM AA GUNS.
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PRACTICAL RATE OF FIRE: 600 RPM
MAXIMUM EFFECTIVE RANGE: 4,600 FEET
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Mix of Guns Observed in Some AAA Batteries
The Chinese are using guns of two different calibers in some of their
antiaircraft batteries. Four AAA batteries, each with four 37mm AA guns
and two ZPU-4 AA heavy machine guns, were observed on recent satellite
photography at .or near installations housing armored units in the Shen-yang
and Lan-chou Military Regions. Two of the batteries were field deployed and
two were parked in barracks areas. These two weapons are quite different in
range and rate of fire and their coordinated use substantially broadens the
capabilities of a AAA battery. The ZPU-4 has a rate of fire about seven
times that of the 37mm gun, but the 37mm has about twice the maximum effective
range of the ZPU-4 (see Figure 2). Both are used to defend against low-
altitude attack. The 37mm is normally deployed in six gun batteries and
the ZPU-4 in eight or nine gun batteries.
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New Types of Military Equipment Observed
Military equipment new to the North Vietnamese inventory has been 2 5X1 D
identified at two locations on recent photography (see Map).
77 TPP heavy ponton bridge sections and 12 BMK-150 power boats
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were seen in the Dong Dang storage area, and seven BTR-50P amphibious
personnel carriers were observed on flatcars in the Yen Vien Rail Yards.
The same types of e ui ment were seen earlier in the Ping-hsiang Rail Yards
in China. On photography, 96 bridge sections, two boats and 16
personnel carriers were located at Ping-hsiang.
The Soviet-made bridge sections carry the necessary beams and decking
to rapidly assemble a ponton bridge. The BTR-50P is built over the PT-76
tank chassis and can carry three crewmen and 12 passengers (see Figure 3).
FIGURE 4, LOCATION MAP.
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