MEASURE OF DAMAGES. See DAMAGES. MEASURES. See IVEIGIITS AND MEASURES.
poop. forecastle, deckhouses, between decks, etc. From the total so obtained the lowing deductions are made: (1) Space exclusively occupied by the crew and t he storage of their clothing, etc.; provided that this space does not exceed 20 per cent. of the remaining tonnage of the ship; if it is greater than 20 per cent. the excess is to he considered as part of the tonnage space. (2) Space framed in above the tipper deck for machinery or for admission of light or air. (3) In vessels pelled wholly by sails, any space set apart and used exclusively for stowage of sails, if not exceeding per vent. of the tonnage of the ship. (1) Any space used exclusively for the of the master. (5) Any space used exclusively for the working of the helm or of anchor gear or for keeping charts, signals, instruments of navigation. and boatswain's stores. (6) Space occupied by donkey engine and boiler if connected with main pumps of ships. (7) Double bottom when not available for cargo. stores, or fuel. (s) Aetna] engine room and fire-room including shaft alley, hut omitting all space not occupied by engines and boilers or necessary for working them. When the actual engine and fire rooms occupy in paddle vessels 20 to 30 percent. of the gross tonnage the deduction is to be 37 per cent. of gross tonnage; when the engine and fire rooms oecupy 20 per cent. or less the deduction may be 37 per cent. of the gross tonnage or times the actual engine and fire room space. the option resting with the Board of Trade: when the spare oc•eupied by the propelling maeltinery, etc., exceeds 30 per cent. of the gross tonnage the deduction to be made is 37 per cent. of it or times the actual and fire room space. the option remaining
with the owners. In the ease of serew steamers when the space occupied by the machinery and boilers is 13 to 20 pen• cent. of the gross tonnage the 114411101011 is 32 per cent. of that tonnage; when the occupied is 13 per cent. or less the deduction is 32 per cent. of the gross ton nage, or la, times the actual space, (lie option remaining with the Board of Trade; when the space occupied is 20 per cent. or more the de duction is 32 per cent. or l times the actual space, at the option of the owners.
The total additions and deductions to the ton nage space having, been made, the capacity in cubic feet so obtained is divided by 100, and the result is the r tonnogc (or n, t register tonnogc) of the ship. The gross register ton is obtained by dividing by 100 the total (-opacity of the hull and deckhouses without de ions.
Whns owing to the presence of cargo or other reason. it is impracticable to measure a vessel as heretofore described. the tonnage is deter mined as follows: Pass a chain around the hull at the midship section and measure the length under the bottom from the upper deck at one side to the tipper deck at the other. Cal] this the girth. Add one-half the girth to one-half the main breadth; square the sum so obtained and multiply the result by the length of the ship from outside the slim to outside the stern post; multiply this product by .0018 for wooden ships and by .0021 for those built of iron or steel.
By the net of Congress of May 6. 1861 (taking effect January 1. 18651. the I'nited States adopted the English system with slight changes