about 5 p.m.
It was our hunter . I trimmed right down , hoping to avoid being seen , as it was essential to stay on the surface and get some amperes into the battery . I also altered course away from him . It was about 5 p.m. that I saw two trawlers ahead , one on each bow . By this time the boat 's crew had quite recovered , but I did not wish to dive , as the battery was still pitiably low . I gradually altered course to north-east , but after half an hour 's run I almost ran on top of a group of patrols in the dusk . I crash-dived , and they must have seen me go down , as a few minutes later the boat was violently shaken by a depth-charge .