The artillerist's manual and British soldier's compendium

by F. A. Griffiths

TABLE B.

Angles subtended by the Mainmasts of French ships of war, between the water-line and the truck, also between the water-line and the crosstrees, at distances in yards, and in cables’ length; the eye of the observer being twenty feet above the water.

DISTANCES.		LINE OF BATTLE SHIPS.
		120 Guns.				90 Guns.				82 Guns.
		ft. in.		ft. in.		ft. in.		ft. in.		ft. in.		ft. in.
		219	9	158	5	201	9	150	11	192	5	138	0
		Truck		Main-		Truck		Main-		Truck		Main-
		of		topmast		of		topmast		of		topmast
	Cables’	main-		cross-		main-		cross-		main-		cross-
Yards.	length.	mast.		trees.		mast.		trees.		mast.		trees.
		°	′	°	′	°	′	°	′	°	′	°	′
120	½	32	14	24	13	29	59	23	3	28	47	21	11
240	1	17	7	12	29	15	46	11	50	15	4	10	54
360	1½	11	33	8	22	10	37	7	56	10	8	7	38
480	2	8	42	6	17	7	59	5	57	7	38	5	29
600	2½	6	59	5	2	6	24	4	46	6	7	4	23
720	3	5	49	4	12	5	20	3	59	5	6	3	39
840	3½	4	59	3	36	4	35	3	24	4	22	3	8
960	4	4	22	3	9	4	1	2	59	3	49	2	44
1080	4½	3	53	2	48	3	34	2	42	3	24	2	26
1200	5	3	30	2	31	3	21	2	23	3	4	2	12
1320	5½	3	11	2	17	2	55	2	10	2	47	2	0
1440	6	2	55	2	6	2	40	1	59	2	33	1	50

Part 2 of 2
DISTANCES.		FRIGATES.								CORVETTES.				BRIGS.
		60 Guns.				44 Guns.				24 Guns.				18 Guns.
		ft. in.		ft. in.		ft. in.		ft. in.		ft. in.		ft. in.		ft. in.		ft. in.
		187	9	139	0	168	6	121	0	120	7	85	0	112	0	77	0
		Truck		Main-		Truck		Main-		Truck		Main-		Truck		Main-
		of		topmast		of		topmast		of		topmast		of		topmast
	Cables’	main-		cross-		main-		cross-		main-		cross-		main-		cross-
Yards.	length.	mast.		trees.		mast.		trees.		mast.		trees.		mast.		trees.
		°	′	°	′	°	′	°	′	°	′	°	′	°	′	°	′
120	½	28	11	21	12	25	37	18	51	18	50	13	25	17	31	12	11
240	1	14	43	10	55	13	15	9	35	9	34	6	45	8	52	6	7
360	1½	9	54	7	19	8	54	6	24	6	24	4	30	5	56	4	5
480	2	7	27	5	30	6	41	4	48	4	48	3	23	4	27	3	4
600	2½	5	58	4	23	5	21	3	51	3	51	2	42	3	34	2	27
720	3	4	58	3	39	4	28	3	13	3	13	2	15	2	58	2	3
840	3½	4	16	3	8	3	50	2	45	2	45	1	56	2	33	1	45
960	4	3	44	2	44	3	21	2	24	2	24	1	41	2	14	1	32
1080	4½	3	19	2	26	2	59	2	9	2	9	1	30	1	59	1	22
1200	5	2	59	2	12	2	41	1	55	1	55	1	21	1	47	1	14
1320	5½	2	43	2	0	2	26	1	45	1	45	1	14	1	37	1	7
1440	6	2	29	1	50	2	14	1	36	1	36	1	8	1	29	1	1

TABLE C.

Tangent practice with 8-inch Guns, weighing 65, and 60 cwt., carrying a single shot weighing 56 lb., or a shell weighing 56 lb., and charged with 10 lb. of powder. The line of sight is parallel to the axis of the bore, and the gun is 5 feet 4 inches above the level of the water.

Eleva- tions.	Dist- ances.	Heights of part aimed at above the water.		The Points aimed at
				In a Line of battle ship of 82 guns.	In a 44 Gun frigate.
° ′ ″	yards.	ft.	in.
0 22 20	330	11	10	1 foot below the portsills of the main deck.	1½ foot below the portsills of the quarter deck.
0 35 0	435	18	7	7 inches below the portsills of the quarterdeck, and forecastle.	5 feet above ditto.
0 47 30	535	27	6	2 feet above the afterpart of poop plank sheer.	Twice the height from the water to ditto.
1 0 0	630	38	4	About midway between the water-line, and the under side of the maintop.	Three times ditto.
1 20 0	756	58	0	3 feet below the upper side of the foreyard.	Upper side of the mainyard.
1 40 0	879	82	0	Upper side of cap to mizenmast; or, 4 feet above the under side of the maintop.	2 ft. below the upper side of the cap of the mainmast.
2 0 0	1000	110	0	2 feet below the crosstrees of the mizentopmast.	1 ft. above the upper side of crosstrees of foretopmast.
2 20 0	1078	137	0	1 foot below the crosstrees of the maintopmast.	1 ft. above the head of the topgallant rigging foremast.
2 40 0	1153	166	0	4 feet below the head of topgallant rigging.	2 feet below the truck of the mainmast.
3 0 0	1225	198	0	6 feet above the truck of mainmast.
Tangent practice with 32-pounder Gun, weighing 56 cwt., carrying one solid shot, charge 10 lb. The line of sight parallel to the axis of the bore, and the Gun 5 feet 4 inches above the water.
0 15 0	343	9	10	3 feet below the portsills of the upper deck.	3 feet above the portsills of the upper deck.
0 30 0	435	16	9	4 feet above ditto.	3 feet above the portsills of the quarter deck.
0 41 0	525	24	0	1 foot below the afterpart of poop plank sheer.	About midway between the water, and the under side of foreyard.
0 52 0	613	33	0	Midway between the water & upper side of mainyard.	One-third of distance from the water to the crosstrees of mizentopmast.
1 0 0	700	42	0	About midway between the water and the upper side of the cap of the mizenmast.	Midway between the water, and cap of mainmast.
1 20 0	835	63	8	About 2 feet below the upper side of the mainyard.	The under side of foretop.
1 40 0	968	90	0	4 feet below the upper side of the cap of mainmast.	4 feet under the mizentopsail-yard.
2 0 0	1100	120	0	3 feet above the upper side of foretopsail-yard.	1 ft. below the upper side of crosstrees of maintopmast.
2 20 0	1240	157	0	1 foot above the head of topgallant rigging, foremast.	5 feet above the truck of foremast.
2 40 0	1378	198	0	5 feet above the truck of mainmast.
Vide—Tables of Practice, &c., [pages 74], [75], [77], [79].

TABLE D.