Every person who, not being in the United States service, and not being duly authorized by law for the purpose, goes on board any vessel about to arrive at the place of her destination, before her actual arrival, and before she has been completely moored, without permission of the master, shall, for every such offense, be punishable by a fine of not more than two hundred dollars, and by imprisonment for not more than six months; and the master of such vessel may take any such person so going on board into custody, and deliver him up forthwith to any constable or police officer, to be by him taken before any justice of the peace, to be dealt with according to the provisions of this Title (R. S., 4501-4613). (R. S., 4606.) The Secretary of Commerce is hereby authorized and directed to prescribe from time to time and enforce regulations governing the boarding of vessels arriving at the seaports of the United States, before such vessels have been properly inspected and placed in security, and for that purpose to employ any of the officers of that [or Treasury] Department. (Mar. 31, 1900; Feb. 14, 1903; sec. 10.) Each person violating such regulations shall be subject to a penalty of not more than one hundred dollars or imprisonment not to exceed six months, or both, in the discretion of the court. (Mar. 31, 1900; sec. 2.) This Act shall be construed as supplementary to section nine of chapter three hundred and seventy-four of the Statutes of eighteen hundred and eighty two, and section forty-six hundred and six of the Revised Statutes. (Sec. 3.) Boarding and search of vessel. It shall be lawful for any officer of the customs, including inspectors and occasional inspectors, or of a revenue-cutter, or authorized agent of the Treasury Department, or other person specially appointed for the purpose in writing by a collector, naval officer, or surveyor, to go on board of any vessel, as well without as within his district, and to inspect, search, and examine the same, and any person, trunk, or envelope on board, and to this end to hail and stop such vessel if under way, and to use all necessary force to compel compliance; and if it shall appear that any breach or violation of the laws of the United States has been committed, whereby or in consequence of which such vessel, or the merchandise, or any part thereof, on board of or imported by such vessel, is liable to forfeiture, to make seizure of the same, or either or any part thereof, and to arrest, or in case of escape, or any attempt to escape, to pursue and arrest any person engaged in such breach or violation. (R. S., 3059.) The original appointment in writing of any person specially appointed under the provisions of the previous section shall be filed in the custom-house where such appointment is made. (R. S., 3060.)