During her service in the
Kriegsmarine,
U-41 sank five commercial ships for ; damaged one commercial vessel of and captured two ships totalling .
Second patrol U-41 left Wilhelmshaven with Mugler in command once again on 7 November 1939. On 12 November, both the 275 GRT British vessel
Cresswell and the 11,019 GRT Norwegian ship
Arne Kjøde were sunk by torpedoes. The 1,351 GRT British merchant vessel
Darino went to the bottom on the 19th. The last enemy vessel to be sunk by
U-41 was the French vessel
Les Barges II. She displaced a total of 296 GRT and was sunk by a single torpedo on 21 November. The U-boat then returned to port on 7 December 1939.
Third patrol U-41 left the port of
Helgoland on 27 January 1940 with Mugler still in command. During her final patrol, one enemy ship was sunk and one was damaged; both of these attacks took place on 5 February. The first ship that was hit was the 8,096 GRT Dutch vessel
Ceronia. The
Ceronia was damaged and the 9,874 GRT British ship
Beaverburn was sunk. Nevertheless,
U-41 did not return to her home port, she was sunk on the same day.
Fate Following the attacks on the Dutch
Ceronia and the British
Beaverburn on 5 February 1940,
U-41 was attacked by the British
A class destroyer with
depth charges. She was hit and sunk off the south coast of Ireland. All 49 of her crew members were lost with the boat during the attack. ==Summary of raiding history==