442 
AUTO-SIGHTS. 
APPENDIX 
SOME TYPICAL RESULTS OF ACTUAL PRACTICE WITH AUTOMATIC SIGHTS. 
With 6" Quick-Firing Gun. 
r z 
Range. 
Tide above 
„or below 
mean tide 
level. 
Correc¬ 
tion on 
drum. 
Deflection 
Results 
judged by 
Range 
Officer. 
+ or - 
Remarks. 
Time. 
D.R.F. 
P.F. 
On drum 
p.m. 
4-iS-5o 
4.16. 
4.16.10. 
4.16.30. 
4-i6.55 
yards 
yards 
Height of gun above mean sea level=3oi feet. 
yards -feet yards mins, yards 
2,000 yards. 
Automatic sight with telescope. Deliberate. 
I 
1,925 
1,900 
— o' 6" 
Nil. 
2 R 
Hit. 
Wind force, about 2. 
1,925 
1,900 
— o' 6" 
Nil. 
2 R 
+ XO 
Sea Smooth. 
1,925 
1,875 
1,900 
1,800 
-o' 6" 
— o' 6" 
Nil. ' 
Nil. 
2 R 
aR 
+ 10 
-10 
Target drifting slowly. 
L 775 
1,750 — 0' 6" Nil. 2 R 
2,0.09 yards. 
• Automatic sight with telescope. 
Hit. 
Rapid 
Electric firing gear used. 
4.18 
2,030 
2,000 
— 0' 6" 
Nil. 
2 R 
Hit. 
Wind force, about 2. 
Sea smooth.. Target .drift¬ 
4.18.8 
i »975 
1 , 95 ° 
-0' 6" 
Nil. 
2 R 
— 20 
4.18.30 
1 925 
1,900 
-0' 6" 
• Nil.’ 
2 R 
+20 
ing. Time, 52 seconds. 
Whole of target knocked 
4.18.35 
1,975 
i, 95 o 
-0' 6" 
Nil. 
2 R 
. +10 
4.18.50 
i ,975 
i, 95 o 
-0' 6" 
Nil. 
2 R 
Hit. 
away. Fire continued on 
platform which formed a 
3,000 yards. 
Automatic sight without telescope. 
Deliberate. 
3 - 1-39 
2,965 
2,990 
2,825 
— 1' 0" 
Nil. 
Nil. 
— 60 
3 - 1-55 
2,980 
3,010 
2,900 
— 1 ' 0" 
Nil. 
Nil. 
— 20 
3.2.xo 
2,985 
3,010 
2,975 
— 1' 0" 
Nil. 
Nil. 
Hit. 
3.2.225 
2,990 
3,020 
2 975 
— 1' 0" 
Nil. 
Nil. 
+30 
3 - 2-37 
3,000 
3,025 
3,000 
-1' 0" 
Nil. 
Nil. 
+40 
3,000 yards. 
Automatic sight without telescope. 
Rapid. 
3 - 4-5 
3,060 
3,080 
3,400 
- 1' 0" 
Nil. 
. Nil. 
Range 
3.4.18 
3 ,° 7 ° 
3, 0 90 
3,400 
-1' 0" 
Nil. 
Nil. 
+300 
3 - 4 - 3 ° 
3,075 
3,xoo 
3,375 
— 1' 0" 
Nil. 
Nil. 
+ 250 
3 - 5-45 
3,120 
3 * 5 ° 
3,275 
— 1' 0" 
Nil; 
•Nil.' 
+ 20 
3-6 
3,125 
3 A 5 ° 
3,275 
— x' 0" 
Nil. 
Nil. 
+ 20 
4,000 yards. 
4.34.1c 
3,815 
3,860 
3,800 
-2> o 1 ' 
Nil. 
8 L 
+20 
4.34.22 
3,820 
3,860 
3,800 
— 2' 0" 
Nil. 
8 L 
+ 3 ° 
4 - 34 - 32 * 
3,820 
3,860 
3,825 
— 2 ' o" 
Nil. 
• -8L 
...... + 5 °'' 
4 - 34 - 43 * 
3,820 
3,870 
3,825 
-2 ' 0" 
Nil. 
3 L 
; +40 
4 - 34-54 
3,820 
3,890 
3 825 
-2' 0" 
■Nil. 
8L 
+ 15 
11.18.38 
4,125 
4,140 
4,200 
+1' 6" 
Nil. 
15 L 
+30 
11.18.48 
4,125 
4,140 
4,200 
+ 1' 6" 
Nil. 
15 L 
-f-80 
11.18.58 
4 A 30 
4,140 
4,200 
+ 1' 6" 
Nil. 
10 L 
+50 
11.19.8 
4,130 
4,140 
4,150 
+ 1 ' 6" 
Nil. 
' 10 L 
+30 
11.19.19 
4 A 30 
4,140 
4,100 
+ 1' 6" 
Nil. 
10 L 
+20 
11.19.28 
4 A 30 
4,140 
4,125 
+ 1' 6" 
Nil. . 
10 L 
+40 
11.19.38* 
4,125 
4,140 
4,200 
+ 1' 6" . 
Nil. 
10 L 
+30 
11.19.58 
4,120 
4,140 
4,150 
+ 1 ' 6" 
Nil. 
10 L 
Hit. 
11.20.11 
4,120 
4 A 50 
4,200 
+ 1' 6" 
Nil. 
10 L 
+40 
11.20.34 
4 A 30 
4,160 
4,200 
+ 1' 6" 
Nil. 
10 L 
+50 
11.20 47 
4,140 
4,166 
4,200 
+ 1' 6" 
Nil. 
10 L 
+70 
11.20.57 
4 A 50 
4,160 
4,225 
+ 1' 6" 
. Nil. 
10 L 
+ 100 
11.21.10 
4 A 50 
4,170 
4,200 
+ 1' 6" - 
Nil. 
10 L 
+70 
11.21.20 
4,156 
4,170 
4,170 
+ 1' 6" 
Nil. 
10 L 
Hit. 
11.21.32 
4 A 5 o 
4,170 
4,200 
+ 1' 6" 
Nil. 
10 L 
Hit. 
n.21.51 
4 A 50 
4,180 
4,200 
+ 1' 6'' 
Nil. 
10 L 
+50 
11.22.1 
4,160 
4,190 
4,200 
+ 1' 6" 
Nil. ■ 
10 L 
+60 
11.22.12 
4,160 
4,190 
4,200 
+ 1' 6" 
Nil. 
10 L 
Hit. 
11.22.23 
4,170 
4,190 
4,200 
+ 1' 6" 
Nil. 
10 L 
Broke up. 
11.22.35 
4,170 
4,190 
4,275 
+ 1' 6" 
Nil. 
10 L 
+ 120 
11.22.47 “ 
4 A 75 
4,200 
4,300 
+ 1' 6" 
Nil. 
10 L 
. +130 
11.22.55 
4 ,i 75 
4,190 
4,250 
+1' .6" 
Nil. 
10 L 
+ 110 
11.23.8. 
4,180 
4,190 
4,200 
+ 1' 6" 
Nil. 
10 L 
Hit. 
11.23.19 
4,180 
4,200 
4,200 
+ 1' 6" 
Nil. 
10 L 
+30 
11.23.30 
4,180 
4,200 
4,150 
+ 1' 6" 
Nil. 
10 L 
+25 
Ii.23.40 
4,180 
4,190 
4,150 
+ 1' 6" 
Nil. 
10 L 
+ 15 
11.23.50 
4,180 
4,180 
4,150 
+ 1' 6" 
Nil. 
10 L 
Hit. 
11.24.1 
4,180 
4,190 
4,175 
+ 1' 6" 
Nil: - 
10 L 
Hit; 
11.24.12 
4,iSo 
4,190 
4> 1 75 
+ 1' 6" 
Nil. 
10 L 
Hit. 
11.24.23 
4,180 
4,190 
4,200 
+ 1' 6" 
Nil. 
10 L 
+60 
fairly good objective. 
Wind (gusty) 4. Sea chop¬ 
py. Hazy at times. 
Target, broken up. 
Wind 2. Sea choppy. 
Hazy at times. 
Knocked target over. Lay¬ 
ing not altogether reliable 
as target was now a bad 
objective, only small por¬ 
tion left. Time, 40 sec’s. 
Wind 2. Sea choppy 
Hazy at times. 
Target, drifting.' 
Time, 44 seconds. 
Wind 6. Raining at inter¬ 
vals. 
Target towed six miles an 
hour. Target somewhat in¬ 
distinct at times, owing to 
spray being blown back 
over it. 
Breech jammed, causing 30 
seconds delay, and force 
used in opening it threw 
gun right off target. 
Breech jamming possibly 
caused by metal washer 
from electric primer drop¬ 
ping out of empty cart¬ 
ridge case. 
Several of these washers 
were found lying in breech 
screw during practice. Gun 
became so hot that the rain 
caused, the gun to steam 
and may have interfered 
with laying. 
Mud from parapet was 
blown back inconvenienc¬ 
ing the Battery Command¬ 
er and detachment. 
Round 150 broke up on 
leaving the bore. 
Time, 5 minutes, 45 secs. 
