On 25 March, "Jauréguiberry" departed Port Said for the Dardanelles, where the French and British fleets were attempting to break through the Ottoman defenses guarding the straits. An earlier Anglo-French attack on 18 March had cost the French fleet the battleship "Bouvet", and two other battleships—"Suffren" and "Gaulois"—had been badly damaged and forced to withdraw. To make good his losses, Admiral Émile Guépratte requested that "Jauréguiberry" and "Saint Louis" be transferred to his command. On 1 April, Guépratte transferred his flag from "Charlemagne" to "Jauréguiberry". By late May, the French squadron had been restored to effective strength, and included the battleships "Saint Louis", "Charlemagne", "Patrie", "Suffren", and "Henri IV". The formation was designated the 3rd Battle Division. "Jauréguiberry" provided gunfire support to the troops during the Landing at Cape Helles on 25 April, during which the French forces made a diversionary landing on the Asian side of the straits. During the operation, "Jauréguiberry" and the other French ships kept the Ottoman guns on that side of the strait largely suppressed, and prevented them from interfering with the main landing at Cape Helles. She continued operations in the area until 26 May, including supporting the Allied attack during the Second Battle of Krithia on 6 May. She was lightly damaged by Turkish artillery on 30 April and 5 May, but continued to fire her guns as needed.