MODIFIED AND NEW NORTH KOREAN NAVAL UNITS

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04560A005900010022-0
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 8
• Document Creation Date: December 28, 2016
• Document Release Date: January 5, 2000
• Sequence Number: 22
• Publication Date: March 1, 1967
• Content Type: REPORT

TT N
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PHOTOGRAPHIC INTERPRETAT REPO,.
MODIFIED AND NEW
NORTH KOREAN
NAVAL UNITS
GROUP I EXCLUDED FROM
AUTOMATIC DOWNGRADING
AND DECLASSIFICATION
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This document contains information affecting
the national defense of the United States,
within the meaning of Title lh, sections
793 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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INTRODUCTION
A more heavily armed and modified S.0.1-
type PGM, a P-6-type PGM, and a new class of
YP have been identified on newly-received
photography of North Korean naval combatants
operating in the West Sea Fleet. The photography
was taken in the vicinity of Haeju, North Korea
(38-02N 125-42E), between
1/
No attempt has been made by NPIC to evalu-
ate the engineering data presented in Reference
1. The following data is from a photo-derived
analysis of these previously unreported types/
configurations.
DESCRIPTION
S.O.1-type PGM. Figure 1 shows a standard
Soviet 5.0.1-class SC similar to those operated
NPIC/R-36/67
by the North Korean Navy in the East Sea
Fleet. 2/
Figure 2 shows the modified S.0.1-type PGM
first observed on aerial photography in -
at the Cho-do Naval Base (38-32N 124-52E).
The vessel was identified on ground photogra-
phy of
This unit differs from conventional units
mainly in its armament. The MBU 1800 rocket
launchers have been replaced by a probable 3.35
inch (85mm)/52 caliber dual-purpose forward
main mount; 2 probable 37mm main mounts are
installed in place of the original 2 twin-barrel
25mm weapons; 2 light-caliber mounts are
installed atop the after deckhouse; and the depth
charge racks have been removed.
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FIGURE 2. MODIFIED S.0.1-CLASS PGM.
-1-
25X1 D
25X1 D
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The vessel in Figure 3 is essentially the PTF. No torpedo tubes are installed on the
same as the one in Figure 2 with one exception. PGM.
A third probable 37mm main mount has been
installed near the stern.
P-6-type PGM. Figure 4 shows a Chinese
Communist P-6-class I "I in its normal con-
figuration.
Figure 5 shows the North Korean modifica-
tion, a P-6-type PGM. It differs from the
standard version by having a 37mm mount in
place of the original dual 25mm installation, a
second 37mm mount positioned aft, and 2 athwart-
ship 25mm mounts, making the armament
identical to that of the 130-ft Shanghai-class
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 FC('RFI NPIC/R-36/67
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NPIC L?2800 N1671
FIGURE 6. PREVIOUSLY UNREPORTED TYPE OF YP.
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 ~
Approved For Release 2000/04/17 : C1`-RC71'~T78B04560A005900010022-0 NPIC/R-36/67
YP. A previously unreported type of YP is
shown in Figure 6. The overall length of this
vessel is estimated to be 50-60 ft, and the hull
appears to be constructed of wood. Armament
consists of 1 light automatic weapon forward
and 2 aft. This vessel type has not yet been
sighted at any naval base or shipyard.
Previously Reported Vessels
The following 2 combatants, also described
in Reference 1, were identified in-but
are included in this report to provide a more
comprehensive review of new or modified North
Korean West Sea Fleet patrol vessels.
K-48-type PGM. Figure 7 shows the
standard configuration of a K-48-class SC.
Figure 8 is a K-48-type PGM armed with four
37mm main batteries, 1 forward and 3 aft, but
without any evidence of ASW armament. This
modified K-48 was first observed onaerialpho-
140-foot-class PGM. This vessel, shown in
Figure 9, was first observed at the Sagon-ni
Naval Facility (37-49N 1.:5-20E) on-
aerial photography and idea sified on ground pho-
tography- its armament consists of
I probable 3.35 inch (85m31)/52 caliber dual-
purpose main mount forwai d, three 37 mm main
batteries aft and 2 machit a guns mounted atop
the deckhouse.
The following table lists the Pendant Num-
bers from each of the above 5 categories as
included in Reference 1.
PENDANT
NUMBERS
S,D.I-type PGNI
221 and
234
P-6-type PGM
471 and
473
YP
1350 and
1351
K-48-type POM
671 and
675
140-ft-class PGM
672 and
673
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 SECRET NPIC/R-36/67
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25X1 C
25X1 C
4. CIA. Accession No. 255392, 10 Sep 56 (CONFIDENTIAL/No Foreign Dissem/Continued Control)
MAPS OR CHARTS
ACIC. US Air Target Chart, Series 200, Shoot 0380-12HL, 2d ed, Jun 63 (SECRET)
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