Section 9
SEC. 9. On and after August first, nineteen hundred and three, every Philippine, coastwise vessel which has on board a mate or other watch officer who is not a citizen of the United States or of the Philippine Islands, although authorized to perform the duties of such in accordance with section seven of this Act, shall likewise be required to have on board, as either master or some watch officer, a citizen of the United States or of the Philippine Islands duly qualified by the Board to act in such capacity: Provided, however, That, in the case of Philippine coastwise vessels on which neither the master nor mate are citizens of the United States or the Philippine Islands, although authorized to perform the duties of such positions in accordance with section seven of this Act, the other watch officer or watch officers of the vessel shall be citizens of the United States or citizens of the Philippine Islands duly authorized by the Board to act in such capacity. Any Philippine coastwise vessel which fails to comply with the terms of this section shall be required to pay an additional tonnage tax at the rate of ten cents, United States currency, per net ton per month during the continuance of said failure.