TONNAGE.
Table of Tonnage, and Weight of one of the following Carriages, Carts, Waggons, Gyns, &c., used in land service.
| Carriages. | Tonnage. | Weight. | |||||||
| Tons. ft. | Cwt.qrs.lb. | With | |||||||
| { 24 pounder | 6 | 0 | 34 | 0 | 22 | bullock | |||
| { 8 inch | 6 | 0 | 34 | 2 | 12 | pole and | |||
| *For Iron | { 18 pounder | 4 | 39 | 27 | 2 | 9 | chain, | ||
| Ordnance. | { 12 ” 21 cwt. | 4 | 7 | 18 | 3 | 24 | weighing | ||
| { Howitzer | { 10 inch | 6 | 17 | 39 | 0 | 9 | 2 qrs. 19 lb. | ||
| { 8 ” | 5 | 37 | 33 | 2 | 0 | ||||
| { 12 pounder | 5 | 33 | 22 | 0 | 10 | ||||
| { 9 ” | 5 | 1 | 20 | 2 | 14 | ||||
| *For Brass | { 6 ” | 4 | 21 | 17 | 3 | 5 | |||
| Ordnance. | { | { 32 pr. | 5 | 29 | 23 | 3 | 13 | ||
| { Howitzer | { 24 ” | 5 | 6 | 21 | 0 | 17 | |||
| { | { 12 ” | 4 | 21 | 18 | 3 | 14 | |||
| *Ammunition waggon | 5 | 36 | 20 | 0 | 3 | For all natures. | |||
| *Forge | 5 | 38 | 19 | 1 | 0 | ||||
| *Store-waggon (without spare wheel) | 5 | 11 | 18 | 1 | 10 | ||||
| *Small arm ammunition waggon | 4 | 36 | 14 | 2 | 16 | ||||
| *Rocket | { 12 pounder | 7 | 33 | 20 | 2 | 8 | |||
| { 6 ” | 5 | 17 | 20 | 1 | 20 | ||||
| *Pontoon | { Large | 3 | 30 | 42 | 2 | 13 | |||
| { Small | 22 | 2 | 5 | ||||||
| Garrison, wood, common standing for 32 pounder of 25 cwt. | 1 | 8 | 8 | 0 | 7 | ||||
| * Travelling complete. | |||||||||
| Tons. ft. | Cwt.qrs.lb. | |||||||
| Capstan, crab | 0 | 31 | 3 | 3 | 26 | |||
| { Forge, cavalry | 4 | 32 | 11 | 2 | 3 | |||
| { Hand | 1 | 10 | 4 | 3 | 4 | |||
| { Hospital, conveyance | 3 | 16 | 10 | 2 | 20 | |||
| Carts | { Sling | 3 | 38 | 16 | 1 | 17 | ||
| { Store | 3 | 16 | 9 | 1 | 0 | |||
| { French | 1 | 32 | 5 | 2 | 13 | |||
| Drugs | { Large | 2 | 7 | 17 | 1 | 24 | ||
| { Small | 0 | 29 | 5 | 0 | 4 | |||
| Gyns, | { Large | 1 | 23 | 9 | 2 | 22 | ||
| Triangle | { Small | 1 | 2 | 7 | 3 | 3 | ||
| { Madras | { For 32 pounder garrison carriage | 0 | 26 | 6 | 0 | 12 | Fir. | |
| Platform. | { Madras | { For traversing carriage with tail-piece | 1 | 23 | 14 | 2 | 0 | Teak. |
| { Mortar, Alderson’s pattern | 0 | 30 | 8 | 1 | 4 | |||
| Portable forge, and pack saddle, in wooden case | 0 | 17 | 2 | 1 | 3 | |||
| { Flanders | 5 | 0 | 16 | 1 | 25 | |||
| Waggons | { Platform | 3 | 16 | 21 | 3 | 18 | ||
| { Sling | 8 | 11 | 31 | 3 | 26 | |||
| Waggons, hospital, Mr. Holmes’ {Large | 9 | 10 | 21 | 0 | 0 | |||
| pattern | {Small. | 6 | 30 | 18 | 0 | 4 | ||
The calculation of tonnage for baggage, stores, &c., is by measurement: a Ton, consisting of 40 cubic feet; but metals, and very heavy articles are estimated by actual weight, without reference to bulk.
To ascertain the tonnage of sailing vessels, the hold being clear.
Rule.—Divide the length of the upper deck between the afterpart of the stem, and the forepart of the stern-post, into six equal parts.
Depths.—At the foremost, the middle, and the aftermost of those points of division, measure in feet, and decimal parts of a foot, the depth from the under side of the upper deck to the ceiling at the limber strake. In the case of a break in the upper deck the depths are to be measured from a line stretched in a continuation of the deck.
Breadths.—Divide each of those three depths into five equal parts, and measure the inside breadths at the following points—viz., at one-fifth, and at four-fifths from the upper deck of the foremost, and aftermost depths, and at two-fifths, and four-fifths from the upper deck of the midship depth.
Length.—At half the midship depth measure the length of the vessel from the afterpart of the stem to the forepart of the stern-post; then to twice the midship depth add the foremost, and the aftermost depths for the sum of the depths; add together the upper, and lower breadths at the foremost division, three times the upper breadth, and the lower breadth at the midship division, and the upper, and twice the lower breadth at the after division, for the sum of the breadths: then multiply the sum of the depths by the sum of the breadths, and this product by the length, and divide the final product by 3500, which will give the number of tons for register.
If the vessel have a poop, or half deck, or a break in the upper deck, measure the inside mean length, breadth, and height of such part thereof as may be included within the bulkhead; multiply these three measurements together, and dividing the product by 92·4, the quotient will be the number of tons to be added to the result as above found.
In order to ascertain the tonnage of open vessels, the depths are to be measured from the upper edge of the upper strake.
To ascertain the tonnage of steam vessels.
Rule.—In addition to the foregoing rules, when applied for the purpose of ascertaining the tonnage of any ship or vessel propelled by steam, the tonnage due to the cubical content of the engine-room must be deducted from the total tonnage of the vessel, as determined by either of the rules aforesaid, and the remainder will be the true register tonnage of the said ship or vessel.
To determine the tonnage due to the cubical content of the engine-room.
Rule.—Measure the inside length of the engine-room in feet and decimal parts of a foot, from the foremost to the aftermost bulkhead, then multiply the said length by the depth of the ship or vessel at the midship division as aforesaid, and the product by the inside breadth of the same division at two-fifths of the depth from the deck, taken aforesaid, and divide the last product by 92·4, and the quotient will be the tonnage due to the cubical content of the engine-room.
To ascertain the tonnage of vessels when laden.
Rule.—Measure, first, the length on the upper deck between the afterpart of the stem, and the forepart of the stern-post; secondly, the inside breadth on the under side of the upper deck, at the middle point of the length; and, thirdly, the depth from the under side of the upper deck down the pump-well to the sink; multiply these three dimensions together, and divide the product by 130, and the quotient will be the amount of the register tonnage of such ships.