shall be certified by the collector to be reasonable in extent and properly and efficiently constructed for the purposes for which they are intended, and the words "Certified for storage of sails" to be cut on the beam and over the doorway of such space. (Mar. 2, 1895.)

23. Deductions for propelling power.—(f) In the case of a ship propelled by steam or other power requiring engine room, a deduction for the space occupied by the propelling power shall be made as follows:

In ships propelled by paddle wheels in which the tonnage of the space occupied by and necessary for the proper working of the boilers and machinery is above 20 per centum and under 30 per centum of the gross tonnage, the deduction shall be 37 per centum of the gross tonnage; and in ships propelled by screws in which the tonnage of the space is above 13 per centum and under 20 per centum of the gross tonnage, the deduction shall be 32 per centum of the gross tonnage. In the case of screw steamers the contents of the trunk shaft shall be deemed spaces necessary for the proper working of the machinery.

(g) In the case of other vessels in which the actual space occupied by the propelling machinery amounts in the case of paddle vessels to 20 per centum or under and in the case of screw vessels to 13 per centum or under of the gross tonnage of the ship, the deduction shall consist in the case of paddle vessels of once and a half the tonnage of the actual machinery space and in the case of screw vessels of once and three-fourths the tonnage of the actual machinery space. But if the actual machinery space is so large as to amount in the case of paddle vessels to 30 per centum or above and in the case of screw vessels to 20 per centum or above of the gross tonnage of the ship the deduction shall consist of 37 per centum of the gross tonnage of the ship in the case of a paddle vessel and 32 per centum of the gross tonnage in the case of a screw vessel; or if the owner prefers there shall be deducted from the gross tonnage of the vessel the tonnage of the space or spaces actually occupied by or required to be inclosed for the proper working of the boilers and machinery, including the trunk shaft or alley in screw steamers, with the addition in the case of vessels propelled with paddle wheels of 50 per centum, and in the case of vessels propelled by screws of 75 per centum of the tonnage of such space.1

(i) On a request in writing to the Commissioner of Navigation by the owners of a ship the tonnage of such portion of the space or spaces above the crown of the engine room and above the upper deck as is framed in for the machinery or for the admission of light and air and not required to be added to gross tonnage shall, for the purpose of ascertaining the tonnage of the space occupied by the propelling power, be added to the tonnage of the engine space, but it shall then be included in the gross tonnage; such space or spaces must be reasonable in extent, safe, and seaworthy, and can not be used for any purpose other than the machinery or for the admission of light and air to the machinery or boilers of the ship. (March 2, 1895.)

24. Register tonnage. And the proper deduction from the gross tonnage having been made, the remainder shall be deemed the net or register tonnage of such vessels. (Aug. 5, 1882.) The register of the vessel shall express the number of decks, the tonnage under the tonnage deck, that of the between-decks, above the tonnage deck, also that of the poop or other inclosed spaces above the deck, each separately. (R. S., 4153.)

The register or other official certificate of the tonnage or nationality of a vessel of the United States, in addition to what is now required by law to be expressed therein, shall state separately the deductions made from the gross tonnage, and shall also state the net or register tonnage of the vessel.

But the outstanding registers or enrollments of vessels of the United States shall not be rendered void by the addition of such new statement of her tonnage unless voluntarily surrendered; but the same may be added to the outstanding document or by an appendix thereto, with a certificate of a collector of customs that the original estimate of tonnage is amended. (Aug. 5, 1882.)

In every vessel documented as a vessel of the United States the number denoting her net tonnage shall be deeply carved or otherwise permanently marked on her main beam, and shall be so continued; and if the number at any time cease to be continued such vessel shall

1 For paragraph (h) see article 15 above.

be subject to a fine of $30 on every arrival in a port of the United States if she have not her tonnage number legally carved or permanently marked. (R. S., 4153, June 19, 1886, sec. 5.) Under the direction of the Secretary of Commerce and Labor the Commissioner of Navigation shall make regulations needful to give effect to the provisions of this act. The Secretary of Commerce and Labor shall establish and promulgate a proper scale of fees to be paid for the readmeasurement of the spaces to be deducted from the gross tonnage of a vessel on the basis of the last sentence of section 4186 of the Revised Statutes, beginning with the words "But the charge for the measurement." (Mar. 2, 1895, sec. 4; Feb. 14, 1903, sec. 10; Aug. 5, 1882, sec. 3.)

25. Appendix of measurement.—-Upon application by the owner or master of an American vessel in foreign trade, collectors of customs, under regulations to be approved by the Secretary of Commerce and Labor, are authorized to attach to the register of such vessel an appendix stating separately, for use in foreign ports, the measurement of such space or spaces as are permitted to be deducted from gross tonnage by the rules of other nations and are not permitted by the laws of the United States. (Mar. 2, 1895; Feb. 14, 1903, sec. 10.)

This act shall not be construed to require the remeasurement of any American vessel duly measured before April 1, 1895, but upon application by the owner of any such vessel collectors of customs shall cause such vessel, or the spaces to be deducted, to be measured according to the provisions of this act, and if a new register is not issued the statement of such remeasurement shall be attached by an appendix to the outstanding register or enrollment with a certificate of the collector of customs that the original estimate of tonnage is amended pursuant to this act. (Mar. 2, 1895, sec. 2.)

26. Vessels exempt from measurement. The provisions foregoing relating to the measurement of vessels shall not be deemed to apply to any vessel not required by law to be registered or enrolled or licensed, unless otherwise specially provided. (R. S., 4152.)

27. Measurement of foreign vessels.-Whenever it is made to appear to the Secretary of Commerce and Labor that the rules concerning the measurement for tonnage of vessels of the United States have been substantially adopted by the Government of any foreign country he may direct that the vessels of such foreign country be deemed to be of the tonnage denoted in their certificates of register or other national papers, and thereupon it shall not be necessary for such vessels to be remeasured at any port in the United States; and when it shall be necessary to ascertain the tonnage of any vessel not a vessel of the United States, the said tonnage shall be ascertained in the manner provided by law for the measurement of vessels of the United States. (R. S., 4154, Aug. 5, 1882, sec. 2; Feb. 14, 1903, sec. 10.)

APPENDIX II.

RULES AND REGULATIONS OF THE UNITED STATES CONCERNING THE MEASUREMENT OF VESSELS.

[ARTICLES 71-87 "CUSTOMS REGULATIONS OF THE UNITED STATES, 1908."]

APPENDIX II.

RULES AND REGULATIONS OF THE UNITED STATES CONCERNING THE MEASUREMENT OF VESSELS.

ARTICLES 71-87 "CUSTOMS REGULATIONS OF THE UNITED STATES, 1908."

ARTICLE 71. Method of measurement. The document of every vessel shall express her length, breadth, and depth, and the height under the third or spar deck, which shall be ascertained in the following manner: The tonnage deck, in vessels having three or more decks to the hull, shall be the second deck from below; in all other cases the upper deck of the hull is to be the tonnage deck.

The length from the fore part of the outer planking, on the side of the stem, to the after part of the main sternpost of screw steamers, and to the after part of the rudderpost of all other vessels, measured on the top of the tonnage deck, shall be accounted the vessel's length. The breadth of the broadest part on the outside of the vessel shall be accounted the vessel's breadth of beam.

A measure from the underside of tonnage deck plank, amidships, to the ceiling of the hold, average thickness, shall be accounted the depth of hold. If the vessel has a third deck, then the height from the top of the tonnage deck plank to the underside of the upper deck plank shall be accounted as the height under the spar deck. All measurements to be taken in feet and fractions of feet; and all fractions of feet shall be expressed in decimals. (R. S., 4150.) ART. 72. Definition of tonnage.—The legal tonnage of a vessel shall be her entire internal cubical capacity, exclusive of the spaces hereinafter directed to be deducted, expressed in tons of 100 cubic feet each, to be ascertained as follows: Measure the length of the vessel in a straight line along the upper side of the tonnage deck, from the inside of the inner plank, average thickness, at the side of the stem to the inside of the plank on the stern timbers, average thickness, deducting from this length what is due to the rake of the bow in the thickness of the deck and what is due to the rake of the stern timber in the thickness of the deck, and also what is due. to the rake of the stern timber in one-third of the round of the beam; divide the length so taken into the number of equal parts required by the following table, according to the class in such table to which the vessel belongs. (R. S., 4153.)

ART. 73. Tonnage classes.-The classes shall be arranged as follows:

Class 1. Vessels of which the tonnage length according to the above measurement is 50 feet, or under, into 6 equal parts.

Class 2. Vessels of which the tonnage length according to the above measurement is above 50 feet, and not exceeding 100 feet long, into 8 equal parts.

Class 3. Vessels of which the tonnage length according to the above measurement is above 100 feet long, and not exceeding 150 feet long, into 10 equal parts.

Class 4. Vessels of which the tonnage length according to the above measurement is above

150 feet, and not exceeding 200 feet long, into 12 equal parts.

Class 5. Vessels of which the tonnage length according to the above measurement is above 200 feet, and not exceeding 250 feet long, into 14 equal parts.

Class 6. Vessels of which the tonnage length according to the above measurement is above 250 feet long, into 16 equal parts.

ART. 74. Transverse areas.-Then, the hold being sufficiently cleared to admit of the required depths and breadths being properly taken, find the transverse area of such vessel at each point of division of the length as follows: