[Rockin Robbins]

The most sucessful captains operated surfaced at all times unless actively avoiding a perceived enemy detection. This assumes using radar, of course. The unsuccessful ones remained submerged during the day when they could find targets and surfaced at night when targets could not be seen. They then returned to port with 24 torpedoes reporting there were no targets available. At the same time Barb and other more daring boats were having a field day.