Section 10
SEC. 10. In addition to the penalties prescribed by section three hundred and two of the Philippine Customs Administrative Act, the master of any vessel operating under a special coastwise license which shall have any firearms, gunpowder, cartridges, dynamite, or any other class of explosives or munitions of war, concealed on board the vessel, or not duly manifested, may also, on conviction, be imprisoned at hard labor not more than ton years, in the discretion of the court; and any officer, member of the crew, or other person aboard such vessel, who. having guilty knowledge of the presence on board of such concealed or unmanifested firearms, gunpowder, cartridges, dynamite, or other explosives or munitions of war, shall fail to report, or to make due effort to report, the same to the first authority of the Insular Government with whom communication can be had, shall, on conviction, be fined not more than two thousand dollars, or imprisoned at hard labor not more than five years, or both, in the discretion of the court.