Two days later, Irresistible repeated the operation with another 78-man landing party under the command of Lieutenant F. H. Sandford, again at Sedd el Bahr. This time, the target was a battery of six 6-inch Krupp mortars. The men again came under attack from the Ottoman defenders, and again forced their way to their objective using heavy fire from Irresistibles 6-inch guns to suppress the Ottomans. All six mortars were packed with gunpowder and destroyed, and the landing party returned to the ship without a single casualty. The following day, Admiral John de Robeck, the British fleet commander, transferred his flag from Vengeance to Irresistible, while the latter was in Mudros for repairs. De Robeck ordered another attack on 28 February, though bad weather hampered British progress; later in the day, a break in the weather led him to order Irresistibles landing party, again under Sandford's direction, to go ashore. In the course of the raid, the party destroyed eight heavy guns in a battery near Kumkale, six 12-pounder field guns, and four Nordenfelt guns on the way back to the ship. Again, the men returned without a single casualty.
