Bongbong Go is a seaman who was employed in 1990 by Kuhol Ocean Transport. In May 1993, he was discharged and correspondingly paid vacation pay, terminal pay and overtime pay for the number of hours he actually rendered service in excess of his eight (8) working hours a day. Pedro Sisid, however, is dissatisfied with his overtime pay contending that he is on board the vessel 24 hours a day. or even beyond his eight (8) working hours which circumstance renders him on call whenever his service is needed. Therefore, he insists that he be paid 16 hours a day by way of overtime. Is the contention of seaman Bongbong Go tenable? Why?