About two o'clock in the morning
There was also a coil of wire and a boxed magneto battery . One of the pair held to his eyes a pair of night marine glasses . Incessantly this watcher kept his gaze focused on Williamson . About two o'clock in the morning Williamson found it necessary to go below for a few moments . After reaching the conning tower he paused , for a few moments , to look keenly all about him . Yet , look as he would through the night , the machinist 's vision could not see that the bush hidden pair on shore , guessing his intention from his stop by the conning tower , had silently taken to the water . With them they towed the metal cylinder , which floated .