Shortly after the monitors and the bow guns of the fleet began firing, the enemy's gunboats and the Tennessee moved out from behind Morgan and took their position enfilading the channel. Twenty minutes later, through the advance of the column, the broadsides of the leading ships began to bear upon the fort; and as these heavy batteries vomited their iron rain the fire of the defense visibly slackened. Amid the scene of uproar and slaughter, in which the petty Confederate flotilla, thanks to its position of vantage, was playing a deadly part quite out of proportion to its actual strength, the Tecumseh alone was silent. After the first two shots fired by her, which were rather the signal of warning than the opening of the battle, she had loaded her two guns with steel shot, backed by the heaviest charge of powder allowed, and, thus prepared, reserved her fire for the Tennessee alone. "I believe," wrote Farragut in a private letter, "that the Tecumseh would have gone up and grappled with and captured the Tennessee. Craven's heart was bent upon it." The two columns, of ironclads and of wooden vessels lashed together in pairs, were now approaching the line of torpedoes and the narrow entrance through which lay the path of safety; and the broadsides of the heavy sloops which led--the Brooklyn, the Hartford, the Richmond--supported by the less numerous but still powerful batteries following, and by the guns of the turreted ironclads, overbore the fire of the works. All promised fairly, provided the leaders of the two columns pushed rapidly and unhesitatingly in the direction assigned them. But almost at the same moment doubt seized them both, and led to a double disaster. As Craven, leading the monitor column, and then about three hundred yards in advance of the Brooklyn, drew up to the buoy, to the eastward of which he had been directed to go, he saw it so nearly in line with the point beyond that he could not believe it possible to pass. "It is impossible that the admiral means us to go inside that buoy," he said to the pilot; "I can not turn my ship." Just then the Tennessee moved a little ahead, to the westward; and Craven, under the double impulse of his doubt and of his fear lest the hostile ironclad should escape him, changed his course to the left and pushed straight for her, the Tecumseh heading to pass the buoy on the wrong side.