Section 10
SEC. 10. Philippine coastwise vessels which have on board as a chief engineer 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 have on board as a first assistant engineer a citizen of the United States or a citizen of the Philippine Islands duly authorized by the Board to act as such; and every Philippine coastwise vessel which has on board a first assistant engineer who is not a citizen of the United States or a citizen of the Philippine Islands shall have, as chief engineer, either a citizen of the United States or a citizen of the Philippine Islands duly authorized by the Board to act as such: Provided, however, That, in the case of Philippine coastwise vessels on which neither the chief engineer nor the first assistant engineer is a citizen of the United States or a citizen of the Philippine Islands, there shall be employed and carried at least two other assistant engineers who 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.