In January 1906, Behm returned to the ship. Nymphe operated with the training vessels of the German fleet, now organized as the School and Testing Ships Unit, in April and May 1906. She reprised her participation in the Dover–Helgoland regatta that June. KK Heinrich Trendtel replaced now-Fregattenkapitän (FK—Frigate Captain) Behm. During exercises in the western Baltic Sea on 17 November, Undine collided with and sank the torpedo boat ; Nymphe assisted with the rescue effort for the torpedo boat's crew. Nymphe continued in her gunnery training duties, which included fleet shooting practice in April 1907 in the German Bight for the first time; up to that point, her training operations had been confined to the Baltic. She may have also taken part in fleet maneuvers in the area at that time.
