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13 feet Alexandria anchor Appendix arc of fire Artillery attack barrels batteries burst calibre carried cartridge lifts casemates CHAIRS REQUIRED charge circular compound armour constructed covering stone dimensions Disappearing Carriage drum earth effect elevation Elswick experiments feet 6 inches foot fortification fortress Front Rear Fuze and Tube give granite Guns.—The heavy guns hydraulic inches high Iron wire rope Lamp recess land length light guns Lightning conductors list of changes locks machine gun fire machine guns Mantlet masonry medium guns ments Mitchell and Co mounting guns muzzle original Lectures parados penetration pillar loading pivot emplacements platform Portland probable projectiles protection pulley R.M.L. guns racer blocks rammer ramming home recoil resist rifled howitzers Royal Engineers sectional area shell crab shell lifts shewn in Plate ships short ranges shot shrapnel siege silenced slopes space Spithead steam power store magazines surface Temeraire thick transoms traversing turret weight wrought-iron yards
Page 21 - A 16-in. common shell burst with 8 feet 6 inches penetration, and made a crater about 10 feet in diameter at the face of the -wall. This was one of the best results obtained. The shell struck near the base of the wall. Hange about 1 ,500 yards. At Fort Pharos the 10-inch shell, common and Palliser, penetrated the 8-feet rubble walls of the casemates and burst inside.
Page 4 - The penetration of shells fired at angles of elevation between 40 and 60° are nearly double those at 30°.
Page 18 - Lectures, reiterated his opinion that " ships attacking a properly built and manned fortress will fight at short ranges." It is not easy to see why, when worthily opposed, ships should adopt tactics for which they have shown no preference in attacking weak and badly manned defences ; and it is certain that mines, of which ships are not indisposed to take account, will in many cases prevent close quarters...