Page:Encyclopædia Britannica, Ninth Edition, v. 11.djvu/324

Rh 308 GUNNERY ences exist, and, judging from the progress of events, it appears likely that these differences will increase, because, as the science of gunnery becomes developed, each new kind of gun is more exactly fitted to the performance of the special work for which it is intended, and therefore less suitable for other purposes. TABLE IV. Land Service Rifled Guns. Nature, Weight, Calibre, &c. Weight of heaviest Projectile. Max. Service Muzzle Velocity. Class. Perforation at 1000 yds. About Bursting charge of com. shell. About How Mounted. Muzzle-loading. 17&quot;75 of 100 tons tb. 2000 1700 800 700 600 535 400 250 f.s. 1600 1600 1420 1340 1300 1315 1365 1420 03 i 5 3 -a S to G d ! & ins. 30-0 28-0 16 137 10-8 11-9 11-2 8 8 It). OZ. 66 58 43 40 38 30 20 19 En barbette. In turrets. In casemates, on sliding carriage on tra versing platform on racers. En barbette on ditto, ditto. In casemates on do., and en barbette. Do. do. do. Do. do. do. Do. do. do. 16&quot; of 80 tons 12&quot; 5 of 38 tons 12&quot; -0 of 35 tons 12&quot; of 25 tons 11&quot; -0 of 25 tons.... 10&quot; of 18 tons 9&quot; of 12 tons 7&quot; of 7 tons 115 90 80 64 1560 1165 1240 1230 1245 03 &quot; a P fcJO &amp;lt;-i ^~s S i&amp;gt; Armour - piercing projectiles not supplied for these and smaller guns. 9 6 9 7 En barbette, sliding carriages on travers ing platform. Moncrietf carriages. Do. do. Sliding carrs. on traversing platform. Standing and Moncrieff carriages. 7&quot; of 82 cwt., breech- ) loadinf 80 pr. (6 - 3) 5 tons .... A, , IR&quot;.&amp;lt;i 71 CVVt. & 64 pr. (6 3) 5g cwt 64 pr. (6&quot; -3) 64 cwt. 1 40 pr. (4&quot; 75) 35 cwt.... 90 40 25 180 230 170 135 95 64 1365 1360 1320 790 675 940 610 845 830 _a a -H O3 S fc( J ^n o QC in 23 to 25 ft. from point of shaft to muzzle of gun. ) for bombarding. ) for breaching, for bombarding, for breaching. 7 3 2 14 7 Travelling carriages (siege). Do. (siege and batteries of position). Do. do. Do. (siege); also on beds for siege. Travelling carriages (siege). 25 pr. (4&quot;-0) 18 cwt 8&quot; howr. 46 cwt 8&quot; howr. 70 cwt. 1 .... 6&quot; 6 howr. 36 cwt. 1 .... 6&quot; -3 howr. 18 cwt 16 pr. (3&quot; -6) 12 cwt 16 13 9 1355 1560 1390 ^ 03 3 % PH Eb About 23 ft, from point of shaft to muzzle of gun. 1 2 14 7 Field gun carriages, with limbers. Do. do. Do. do. 13 pr. (3&quot; 0) 8 cwt 9 pr. (3&quot; 0) 6 cwt 7 pr. (3&quot; 0) 200 lb 7 7 970 675 -M .5 &quot; ~ 5 3 g -P So 6 6 Mountain service, on travelling car riages. Siege, on beds. Do. do. 7 pr. (3&quot; 0) 150 Ib 1 Special projectiles for penetrating masonry. TABLE V. Sea Service Rifled Guns. Nature, Weight, Calibre Weight of heaviest Max. Service Muzzle Perforation at 1000 yds. Bursting charge of com. shell. How Mounted. Projectile. Velocity. About About Muzzle-loading. tfc. f.s. ins. H&amp;gt;. oz. 16&quot; of 80 tons 1700 1600 28-0 58 In turrets. 12&quot; 5 of 38 tons 800 1420 16 43 In turrets, loading by hydraulic machinery. 12&quot; -0 of 35 tons 700 1340 137 40 In turrets, loading by hand gear. 12&quot; of 25 tons 600 1300 10-8 38 Do. , do. , and broadside. 11&quot; of 25 tons 535 1315 11-9 30 Broadside, revolving, and on turn table en barbette. 10&quot; of 18 tons 400 1363 11-2 20 Broadside, revolving, in turrets, and gunboats. 9&quot;&quot;0 of 12 tons 250 1420 8-8 19 Broadside and revolving. 8&quot; of 9 tons 180 1415 77 14 Broadside. 7&quot; of 6^ tons 115 1525 j Armour-piercing projec 9 Broadside. 7&quot; of 90 cwt 115 1250 1 tiles not used for guns 9 Broadside. of less than 8&quot; calibre. 64 pr. (6&quot; -3) of 64 cwt 64 1385 7 Broadside. 64 pr. (6&quot; -3) of 71 cwt 64 1230 7 Broadside. 9 pr. (3&quot; 0) of 8 cwt 9 1380 7 Boat. 9 pr. (3&quot; 0) of 6 cwt 9 1235 7 Boat. 7 pr. (3&quot; 0) of 200 Ib 7 970 6 Boat. i Breech-loading. 20 pr. (3&quot; 75) of 13 cwt. ... 21 1000 1 2 Gun vessel and upper decks of iron 1 / clads against torpedo vessels. 12 pr. (3&quot;-0) of 8 cwt 12 1170 8 Boat, nearly obsolete. 9 pr. (3&quot; 0) of 6 cwt 9 1060 6 Do. Table IV. shows five distinct classes of rifled ordnance. 1. The heavy armour-piercing guns (figs. 29,30) are mounted round our coasts in casemates and barbette batteries. Their function is to protect the British shores from the attack of ironclad ships, wooden vessels, and boats. They are accord ingly provided with Palliser projectiles, common shells, and