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보/고/서

ATIS INTERROGATION REPORT NO. 3542　23 February 1951

FIELD REPORT (ADVATIS Sp RPt 026)　12 February 1951

Cooperative, intelligent and observant. Reliability - Good.

a. Gun Models (See Sketch)

Position #1　1 X 85mm, M1939 and 1 X 37mm, M1939

Position #2　4 X 45mm AA Gun and 1 X 12.7mm, DShK M1938

Position #3　2 X 37mm, M1939

1 X 45mm AA Gun and 2 X 12.7mm, DShK M1938

Position #4　1 X 37mm, M1939

1 X 45mm AA Gun and 2 X 12.7mm DShK M1938

Position #5　3 X 85mm, M1939

4 X 45mm AA Gun and 1 X 12.7mm DShK M1938

The 45mm AA gun was used by the North Korean Navy. Claimed to be of very late model. Not listed in D/A pamphlet No. 30-2.

b. Guns were manufactured in RUSSIA.

c. The recoil mechanism on the guns were air, spring and hydraulic operated.

d. Ammunition was marked in Russian, size and the content of gun powder either plus or minus in fraction.

e. Velocities of the shells were as follows:

85mm　750m per second

45mm　750 - 800m/second

37mm　750 - 800m/second

f. There were 19 AA guns under the PW command.

g. There were seven men per 85mm guns.

h. Duties: 1 Gun crew chief

2 Gunners

1 Ammunition loader

2 Ammunition carriers

1 Range finder

i. Guns mounted on wheels were towed by trucks. Wheel-less guns were transported on trucks.

j. Within 10 minutes, the battery was in position for firing. For permanent installations, it depended on how well they wanted to camouflage or how deep they wanted to dig in the guns.

k. Rate of fire:

85mm　Depended on loading

45mm　Depended on loading

37mm　120 rounds/minute

12.7mm　550 - 650 rounds/minute

l. Types of fuses:

Time, mechanical and delay fuses.

m. Maximum range of guns as follows:

85mm　13,000m

45mm　6,000m

37mm　4,000m

12.7mm　3,000m

n. AA guns could be used against ground targets, direct fire and indirect fire by changing the ammunition for purposes intended. All shells were interchangeable.

o. The gun crews were alerted when notice of A/C approach was rec’d by telephone.

p. All the guns were laid manually.

q. Firing pin gave trouble but it could be replaced in a short time.

r. PW served in the NK Navy and when his ship was damaged by UN aircraft, all the AA Guns were removed and taken to ground emplacements where PW then served as chief gunner for entire unit.

For the Commanding Officer:

SKETCH OF CHINAMP’O, & BATTERY POSITION

1. 2. 3. 4. 5. Gun Positions

6. City police station

7. Command unit

8. Girl’s middle school

9. Flour mill

10. Wharves

11. People’s hospital

12. RR STA