one o'clock
Suddenly and together , a shrill piping on all the ships broke the silence , followed by the hoarse cry , `` All the anchor watch to muster . '' On all men-of-war at eight o'clock , the anchor watch is mustered . It consists of sixteen men -- eight on duty from nine till one o'clock , the other eight from one till `` all hands '' at 5:30 . The first part always calls its relief at one o'clock . The mustering over , all flocked aft to hear the band again , but were disappointed , for the concert was over . However , the men had come aft for music and music they must have in some shape . So `` Steve '' the modest was dragged out , and after some persuasion sang the following to the tune of `` Lou , Lou , How I Love Ma Lou . ''