SECTION 1. Section four of Act Numbered Seven hundred and eighty, entitled "An Act providing for the examination and licensing of applicants for the positions of master, mate, patron, and engineer of seagoing vessels in the Philippine coastwise trade, and prescribing the number of engineers to be employed by such vessels," is hereby amended by inserting at the end of said section the following:
"Provided, That should any applicant for license as master, mate, patron, or engineer produce, a properly authenticated license issued to him by the duly constituted authorities in the Philippine Islands during the Spanish regime, or such other evidence of competency as may be satisfactory to the Board, and shall have been engaged in the coastwise trade in the waters of the Philippine Islands in the position for which he seeks a license for at least two years, such written examination shall not be required, and license shall be issued thereon, provided he is shown to be physically sound and of good moral character and within the requirements of section seven of this Act."