THE ROYAL ARTILLERY INSTITUTION. 101 
o 
1 
Projectile. 
% 
§ 
j 
Nature 
target. 
ta °| 
* 1 
2 
'o 
6 
1 
t 
1 
g 
Chargi 
in lbs. 
.2 
So 
§ 
<D 
w 
•-S 
fi 
Indent 
Remarks. 
£ 
£ 
£ 
£ 
lbs. oi. 
in. 
o / 
Hole clean through; diameter in front 
c 
40-pr. 
10 
steel 
45 4 
10-25 
round 
5 
200 
0 10 
5 R 
nil 
3" 
headed 
5" x 5 y/ -5; at back (inner) 5"-5, (o^er) 
10". No indent, but clean punch 
through, without any curvature of plate. 
Bulge of plate extending over a surface 
11 
W.I. 
43 0 
9-25 
flat 
6"-75 
i '* 
headed 
2ft.5" x 3ft. Indent5"-75. Four cracks 
( about 1" wide stari 
ing fix 
)m 
centre of 
blow. 
Bulge at back extending over a space 
j 1 ft. 7" x 1 ft. 6"; plate opened out 
in wide rent. Four great cracks. 
Much more damag 
e from wrought-iron shot, more injury to plate on the whole, though 
the steel shot punches a fair hole clean through. 
Shot set up l - 75 by force ot blow. 
c 
12 
C.I. 
41 8 
10-25 
service 
5 
j 5 R 
8"-5 
Indent 8"-5 in length of 1 ft. 8", diameter 
3" 
of hole 6". Struck on margin of No. 10. 
Ragged irregular hole at back. 
B 
12 -pr. 
13 
)y 
11 9 
7 
1-8 
400 0 30 
12 R 
•7 " 
Hit centre of plate nearly; slight indent 
2"-35 
•"7. N o bend of plate, very slight star of 
three branches at back. Indent l"-05 
in 1 ft. 2". 
14 
W.I. 
12 9 
6-5 
flat 
0 32 10 R 
l"-05 
Effect more of a lend in the whole plate. 
headed 
Bulge and seven-starred cracks at the 
back. More “work done” still with the 
wrought-iron. Shot itself “setup” l"-5. 
^Missed. 
» 
» 
15 
” 
” 
” 
” 
” 
” 
0 3318R 
L> 
40-pr. 
16 
C.I. 
41 8 
10-25 
service 
5 
0 3810 R 
Missed. 
4"-5 
17 
0 35 
3R 
Indent "-62S; diameter 3"-1. No break¬ 
” 
” 
” 
” 
33 
ing of plate. Back, slight crack from 
flat 
bolt-hole. 
18 
steel 
9-25 
headed 
0 38 
9 R 
*Missed. 
19 
0 39 
1 R 
*Missed. 
” 
” 
20 
” 
45 4 
10-25 
round 
” 
0 35 
3R 
1-85 
Indent 1"*85; diameter 5 //- 5. No bend in 
headed 
plate. Back, crack 1 ft. 8" laterally, 
opening of crack -"65; two small up¬ 
ward cracks from it. Shot broke up. 
21 
W.I. 
43 0 
9-25 
flat 
0 38 
l"-15 
Indent l"-15in 1ft. 6"-5; diameter 4"-2. 
headed 
33 , 
” 
A certain amount of work lost in knock¬ 
ing down the plate from its fixtures, 
accounting for small effect. Bulge at 
back, and four starred cracks, one of 
f Mr 
Samuda 
target. 
i’s 
them 1ft. 10" in length, gaping f of 
an inch in widest part. 
122 
steel 
45 4 
10-25 
round 
6001 0 
4R 
2"-2 
Indent 2"-2; area of indent 7 "‘7 x 5"-8. 
” 
headed 
j 
Struck on junction of two plates. 
„ 
|23 
C.I. 
41 8 
service 
1 3 
8 R 
•65 
Indent "-65, diameter 3"* 
t Mr Samudaks target (20 x 10 ft.) was composed of two plates 
20' x 3'4" x 5", and two centre plates, the one to the left of the port-hole being 
11'6" x 3'4" x 5", and the one to the right of the port-hole, 6'8" x 3'4" x 5". 
The skin was 1 in. thick, and longitudinal ribs 2 4 ins. thick were placed at 
the junction of the plates, by which means the whole target was supposed to 
be of uniform strength. The upper and lower plates were secured by 
bolts 14 ins. apart, and the middle plates by alternate bolts and rivets. A 
thin layer of india-rubber was placed between the armour plate and skin, and 
leather under the bolt-heads. 
The target was supported by a framework of 14-in. timbers 3' 6" apart, 
strutted to the rear, the feet of the struts being secured to timber piles. 
The total weight of the target (exclusive of the beams of the ship) was 
27 tons 19 cwt. 
The armour plates were rolled by Messrs John Brown and Co. of Sheffield. 
# Elat-headed projectiles gave very uncertain practice. 
