the royal norwegian navy's ships suffered much wear and tear during the first world war and many were decommissioned in 1920, including 14 torpedo boats. most of the remaining vessels were mothballed. with the introduction of the larger and more modern three-ship "trygg" class in 1919–1921, most of the old torpedo boats remained inactive, and nine of them were rebuilt as patrol boats. "storm" was one of only 14 pre-first world war torpedo boats to remain with the royal norwegian navy until 1939.