Throughout the operation, "Moltke" remained in the Baltic and provided cover for the assault into the Gulf of Riga. On the morning of the 19th, "Moltke" was torpedoed by the British E-class submarine . The torpedo was not spotted until it was approximately 200 yards (183 m) away; without time to maneuver, the ship was struck in the bow torpedo room. The explosion damaged several torpedoes in the ship, but they did not detonate themselves. Eight men were killed, and of water entered the ship. The ship was repaired at Blohm & Voss in Hamburg, between 23 August and 20 September.