U-47 carried out ten combat patrols and spent a total of 238 days at sea.
These will travel with combat patrols and train new recruits inside Nicaragua.
During her service with the Kriegsmarine, she took part in four combat patrols.
"I looked at you when the rest of us were coming back from that combat patrol," he said.
Flying a combat patrol was nothing like being trained on a new aeroplane.
American combat patrols have ended, violence is down, and a new government has been formed.
It flew its first combat patrols five days before Christmas, 1916.
She only completed one combat patrol and sank no Allied ships.
She carried out only one combat patrol, but still managed to see action as a training boat in the summer of 1941.
The squadron's first combat patrol commenced on 18 March 1944.