 U @-@ 38 left her home port of Wilhelmshaven with Heinrich Liebe in command on 8 April 1940 . She would sweep the waters off Norway , supporting the occupation of that country by Nazi troops . During this patrol , U @-@ 38 reported problems with her torpedoes , after HMS Effingham was fired upon with no result . U @-@ 38 would return to port on 27 April . 
