"storm" formed part of the 4th torpedo boat division of the 2nd naval district, along with her fellow 1. class torpedo boats and "brand". as was the case with the other norwegian torpedo boat units, the vessels of the 4th torpedo boat division operated individually along the coast, protecting norwegian shipping and guarding against neutrality violations. during the first months of the war norwegian neutrality was repeatedly breached by both warring sides, most dramatically by the royal navy in the february 1940 altmark incident.