The end for Stegg came on 20 April 1940 as she was anchored at Herøysund. In the morning the 1,870-ton artillery training ship Bremse and the armed whaler Schiff 221 blocked Stegg in the fjord and attacked her. Early on in the engagement two 57 mm shells from Schiff 221 hit Stegg in the bow, set her ablaze and caused water to start flooding the torpedo boat.
The end came for Stegg on 20 April 1940 when she was anchored at Herøysund. In the morning, the artillery training ship Bremse and armed whaler Schiff 221 blocked Stegg in the fjord and attacked her. Early in the engagement, two 57 mm shells from Schiff 221 struck Stegg in the bow, set her on fire, and caused water to begin flooding the torpedo boat.