Hotchkiss Revolving Cannon - Tables

The information in these tables has been taken from Lieut. Edward W Very USN's 1885 publication "The Hotchkiss Revolving Cannon". [Ref H1] I have corrected a few printer's errors.

		37 mm.		47 mm.		53 mm.
		English	Metric	English	Metric	English	Metric
Calibre		1.45 in	37 mm	1.85 in	47 mm	2.09 in	53 mm
Length of gun		46.4 in	1180 mm	68.1 in	1730 mm	84.25 in	2,140mm
Extreme length, including stock		55.9 in	1420 mm	78.7 in	2000 mm	Has no stock
Length from pivot centre to tip of stock		31.5 in	800 mm	37.8 in	960 mm	Has no stock
Distance between trunnion faces		16.3 in	415 mm	21.5 in	546 mm	24.3 in	618 mm
Mean height of trunnion centres above deck		46.4 in	1180 mm	46.4 in	1180 mm	35.8 in	910 mm
Length of gun-barrel		29.1 in	740 mm	46.2 in	1175 mm	56.3 in	1431 mm
Number of barrels		5	5	5	5	5	5
Weight of each barrel		31 lbs.	14 Kg	97 lbs.	44 Kg	176 lbs	80 Kg
Length of rifled bore		24.7 in	627 mm	39.3 in	998 mm	47.2 in	1201 mm
Total length of bore in calibre		20	20	25	25	27	27
Lands -	Number	12	12	20	20	24	24
	Width	0.06 in	1.5 mm	0.06 in	1.5 mm	0.067 in	1.7 mm
	Height	0.016 in	0.4 mm	0.016 in	0.4 mm	0.016 in	0.4 mm
Angle of rifling		6 deg	6 deg	8 deg	8 deg	6 deg 20'	6 deg 20'
Length of line of sight		33.34 in	847 mm	43.4 in	1102 mm	39.4 in	1000 mm
Height of line of sight above axis of firing barrel		8.24 in	211 mm	11.5 in	294 mm	7.16 in	182 mm
Horizontal distance of line of sight to right of axis of firing barrel		1.77 in	25 mm	2.16 in	55 mm	to left of 6.4 in	barrel 163 mm
Weight of gun, including stock		462 lbs.	210 Kg	1265 lbs.	575 kg	2200 lbs.	1000 Kg

Naval Material - Guns

		37 mm.		47 mm.		53 mm.
		English	Metric	English	Metric	English	Metric
Steel shell	Length	3.74 in	95 mm	5.19 in	132 mm	6.17 in	157 mm
	Radius of ogive in diameters	2	2	2	2	2	2
	Ratio of weight to spherical shot	2.78	2.78	2.95	2.95	2.95	2.95
	Weight, empty	15.75 oz	450 gm	2.23 lbs	1014 gm	3.33 lbs	1514 gm
	Weight of bursting-charge	0.5 oz	15 gm	1.6 oz	45 gm	2.1 oz	60 gm
	Weight of fuze	1.4 oz	40 gm	1.9 oz	56 gm	1.9 oz	56 gm
	Loaded weight	1.1 lbs	505 gm	2.45 lbs	1115 gm	3.58 lbs	1630 gm
Common shell	Length	3.66 in	93 mm	4.99 in	127 mm	6.34 in	161 mm
	Radius of ogive in diameters	2.17	2.17	2.42	2.42	2.55	2.55
	Ratio of weight to spherical shot	2.5	2.5	2.85	2.85	2.85	2.85
	Weight, empty	14.4 oz	413 gm	2.20 lbs	1000 gm	3.31 lbs	1505 gm
	Weight of bursting-charge	0.77 oz	22 gm	1.6 oz	45 gm	2.5 oz	70 gm
	Weight of fuze	0.7 oz	22 gm	1.6 oz	45 gm	2.5 oz	70 gm
	Loaded weight	1 lb.	455 gm	2.36 lbs	1075 gm	3.58 lbs	1630 gm
Case shot	Weight	1.25 lbs	570 gm	2.44 lbs	1110 gm	4.22 lbs	1920 gm
	Number of bullets	28	28	30	30	58	58
	Weight of each bullet	0.7 oz	19 gm	1.1 oz	32 gm	1.0 oz	28 gm
Diameter of rifling-belt		1.49 in	37.8 mm	1.93 in	48.1 mm	2.14 in	54.3 mm
Weight of empty cartridge-case		3 oz	85 gm	7.7 oz	222 gm	10.1 oz	290 gm
Weight of powder charge		2.8 oz	80 gm	7 oz	200 gm	14.3 oz	410 gm
Total weight of cartridge complete (steel shell)		1.5 lbs	675 gm	3.4 lbs	1545 gm	5.1 lbs	2345 gm
Total weight of cartridge complete (common shell)		1.4 lbs	625 gm	3.3 lbs	1505 gm	4.5 lbs	2040 gm
Total weight of cartridge complete (case shot)		1.63 lbs	740 gm	3.4 lbs	1550 gm	5.8 lbs	2630 gm
Total length of cartridge complete		6.57 in	167 mm	9.25 in	235 mm	12.42 in	315.5 mm

		37 mm.		47 mm.		53 mm.
		English	Metric	English	Metric	English	Metric
Ship mount	Weight of pivot	77 lbs	35 Kg	158 lbs	72 Kg	-	-
	Mean weight of rail-socket	44 lbs	20 Kg	139 lbs	63 Kg	-	-
	Weight of fixed stand	396 lbs	180 Kg	462 lbs	210 Kg	-	-
Extreme angles of elevation and depression (ship mount)		+ 15°-35°	+ 15° -35°	+20° -20°	+20° -20°	+20° -10°	+20° -10°
Weight of 53 mm ship carriage		-	-	-	-	1672 lbs	760 Kg
Mean total weight of gun and mount (without shield)		583 lbs	265 Kg	1562 lbs	710 Kg	3872 lbs	1760 Kg
Weight of chest with accessories and spare parts		92 lbs	42 Kg	136 lbs	62 Kg	66 lbs	30 Kg
Weight of boat fixtures		55 lbs	25 Kg	154 lbs	70 Kg	-	-
Weight of boat carriage		-	-	649 lbs	295 Kg	-	-
Landing mount	Weight of gun carriage complete	638 lbs	290 Kg	-	-	-	-
	Weight of limber (empty)	572 lbs	260 Kg	-	-	-	-
	Weight of limber (loaded)	990 lbs	450 Kg	-	-	-	-
	Number of rounds in limber	300	300	-	-	-	-
	Diameter of wheels	45.2 in	1150 mm	-	-	-	-
Total weight of gun, carriage and limber, fully equipped		2090 lbs	950 Kg	-	-	-	-
Extreme angle of elevation and depression (landing mount)		+12°-5°	+12° -5°	-	-	-	-
Weight of ammunition box with 60 rounds		108 lbs	49 Kg	-	-	-	-
Weight of ammunition box with 24 rounds		-	-	105 lbs	47.7 Kg	-	-
Weight of ammunition box with 20 rounds		-	-	-	-	147 lbs	67 Kg

		Light Field		Heavy Field		Flank Defence
		English	Metric	English	Metric	English	Metric
Calibre		1.45 in	37 mm	1.45 in	37 mm	1.57 in	40 mm
Length of gun		46.4 in	1180 mm	70.4 in	1790 mm	70.4 in	1790 mm
Extreme length, (to end of crank when turned to the rear)		53.9 in	1360 mm	74.8 in	1900 mm	74.8 in	1900 mm
Length from trunnion-centres to face of breech		19.7 in	500 mm	27.9 in	710 mm	27.9 in	710 mm
Distance between trunnion faces		16.3 in	415 mm	19 in	484 mm	19 in	484 mm
Mean height of trunnion centres above tread		35 in	890 mm	42.4 in	1080 mm	47.2 in	1200 mm
Length of gun-barrel		29.1 in	740 mm	50.1 in	1276 mm	50.1 in	1276 mm
Number of barrels		5	5	5	5	5	5
Weight of each barrel		30.8 lbs.	14 Kg	79 lbs.	36 Kg	75 lbs	34 Kg
Length of rifled bore		24.7 in	627 mm	43.4 in	1121 mm	43.6 in	1176 mm
Total length of bore in calibre		20	20	34.5	34.5	32	32
Lands -	Number	12	12	12	12	12	12
	Width	0.059 in	1.5 mm	0.059 in	1.5 mm	0.098 in	2 mm
	Height	0.015 in	0.4 mm	0.015 in	0.4 mm	0.015 in	0.4 mm
Angle of rifling		6°	6°	8°	8°	see web page
Length of line of sight		33.34 in	847 mm	26.89 in	683 mm	27.75 in	705 mm
Height of line of sight above axis of firing barrel		4.87 in	124 mm	5.66 in	144 mm	5.12 in	130 mm
Horizontal distance of line of sight to right of axis of firing barrel		6.05 in	154 mm	6.85 in	174 mm	6.69 in	170 mm
Weight of gun complete		495 lbs.	225 Kg	1045 lbs.	475 kg	1162 lbs.	528 Kg

		Light Field		Heavy Field		Flank Defence
		English	Metric	English	Metric	English	Metric
Common shell	Length	3.66 in	93 mm	4.37 in	111 mm	-	-
	Average number of burst pieces	15	15	19	19	-	-
	Ratio of weight to spherical shot	2.5	2.5	2.86	2.86	-	-
	Weight, empty	14.4 oz	413 gm	1 lb.	470 gm	-	-
	Weight of bursting-charge	0.7 oz	20 gm	0.8 oz	25 gm	-	-
	Weight of fuze	1.9 oz	55 gm	1.9 oz	55 gm	-	-
	Loaded weight	1 lb.	480 gm	1.19 lbs	550 gm	-	-
Case shot	Weight	1.25 lbs	570 gm	1.25 lbs	570 gm	1.87 lbs	850 gm
	Number of bullets	28	28	28	28	24	24
	Weight of each bullet	0.7 oz	19 gm	0.7 oz	19 gm	1.1 oz	32 gm
Diameter of rifling-belt		1.49 in	37.8 mm	1.49 in	37.8 mm	-	-
Weight of empty cartridge-case		3 oz	85 gm	3.4 oz	110 gm	8.8 oz	260 gm
Weight of powder charge		2.8 oz	80 gm	3.8 oz	112 gm	3 oz	90 gm
Total weight of cartridge complete (common shell)		1.4 lbs	650 gm	1.7 lbs	775 gm	-	-
Total weight of cartridge complete (case shot)		1.63 lbs	740 gm	1.75 lbs	795 gm	2.5 lbs	110 gm
Total length of cartridge complete		6.57 in	167 mm	8.1 in	206 mm	8.1 in	206 mm

	Light Field		Heavy Field		Flank Defence
	English	Metric	English	Metric	English	Metric
Diameter of wheels	45.2 in	1150 mm	55.1 in	1400 mm	19.7 in	500 mm
Width of tread	47.2 in	1200 mm	60.2 in	1530 mm	37.4 in	950 mm
Weight of one wheel	99 lbs	45 Kg	187 lbs	85 Kg	-	-
Weight of gun carriage (without shield)	550 lbs	250 Kg	990 lbs	450 Kg	1276 lbs	580 Kg
Weight of shield	220 lbs	100 Kg	282 lbs	128 Kg	176 lbs	80 Kg
Weight of limber (empty)	605 lbs	275 Kg	913 lbs	415 Kg	-	-
Weight of limber (loaded)	1067 lbs	485 Kg	1452 lbs	660 Kg	-	-
Number of rounds in limber	300	300	300	300	-	-
Total weight of gun, carriage and limber, fully equipped	2112 lbs	960 Kg	3487 lbs	1585 Kg	-	-
Weight of body of ammunition wagon (empty)	825 lbs	375 Kg	1496 lbs	680 Kg	-	-
Weight of body of ammunition wagon (loaded)	2024 lbs	920 Kg	2904 lbs	1320 Kg	-	-
Number of rounds in wagon-body	800	800	800	800	-	-
Number of rounds in wagon-limber	300	300	300	300	-	-
Total weight of ammunition wagon and limber, fully equipped	3091 lbs	1405 Kg	4356 lbs	1980 Kg	-	-
Total number of rounds transported per gun	1400	1400	1400	1400	-	-
Angle of trail of gun-carriage	29°	29°	27°	27°	38°	38°
Extreme angle of elevation	+18°	+18°	+20°	+20°	+10°	+10°
Extreme angle of depression	-5°	-5°	-5°	-5°	-10°	-10°
Extreme angle of deflection with horizontal training apparatus	4°	4°	4°	4°	-	-

Naval Material - Ammunition

Naval Material

Mounts, Carriages and Equipments

Military Material - Guns

Military Material - Ammunition

Military Material

Mounts, Carriages and Equipments

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