At the end of February Tattnall laid plans for an amphibious assault on the two advanced batteries at Venus Point and Oakley Island. General Lee personally interceded. Preparations at Old Fort Jackson were not completed. Although Tattnall's flagship had been put back into service since the Squadron's January resupply sortie, one of the three gunboats was still seriously disabled. Lee reasoned that if Tattnall's plan failed, the city itself would be open to attack. The three-to-seven exchange had not gone well for the defenders of Savannah. A possible two-to-seven match against ships with superior armament did not promise better. No further consideration was given to relief of the Fort; in any case, it had perhaps sixteen weeks of provisions left in store. Meanwhile, Federal emplacements continued to improve on Jones and Bird islands, Venus Point and other points along the river. During the Federal bombardment of Fort Pulaski, April 10–11, "Old "Savannah"" participated in counter-battery fire with besieging Union guns.