The bow and stern port shutters of the Tennessee were now jammed, so that those guns could not be used. Soon her smoke-stack came down and the smoke rising from its stump poured through the gratings on to the gun-deck, where the thermometer now stood at 120 deg.. At about the same time the tiller-chains were shot away from their exposed position over the after-deck. Losing thus the power of directing her movements, the Tennessee headed aimlessly down the bay, followed always by the unrelenting Chickasaw, under the pounding of whose heavy guns the after-end of the shield was now seen, by those within, to be perceptibly vibrating. The Manhattan and Winnebago were also at work, and the Hartford, Ossipee, and other vessels were seeking their chance to ram again. During this time Buchanan, who was superintending in person the working of the battery, sent for a machinist to back out the pin of a jammed port shutter; while the man was at work a shot struck just outside where he was sitting, the concussion crushing him so that the remains had to be shovelled into buckets. At the same moment the admiral received a wound from an iron splinter, breaking his leg. The command then fell upon Captain Johnston, who endured the hammering, powerless to reply, for twenty minutes longer; then, after consultation with the admiral, he hauled down the flag which was hoisted on a boat-hook thrust through the grating. As it had before been shot away the fire of the fleet did not stop, and Johnston accordingly went on the roof and showed a white flag. As he stood there the Ossipee was approaching at full speed to ram on the starboard side, passing the sluggish Winnebago, whose captain, still outside his turret, exchanged greetings with his more fortunate competitor. Her helm was put over and engines backed at once, but it was too late to avoid the collision. As they came together her captain appeared on the forecastle and, along with the blow, Johnston received a genial greeting from the most genial of men: "Hallo, Johnston, old fellow! how are you? This is the United States Steamer Ossipee. I'll send a boat alongside for you. Le Roy, don't you know me?" The boat was sent and the United States flag hoisted on board the Tennessee at ten o'clock.[37] The fight had lasted a little over an hour. The loss of the Tennessee was 2 killed and 10 wounded, that of the Union fleet, from the forts and the enemy's squadron, 52 killed and 170 wounded.[38] Besides the loss of the smoke-stack and steering-gear, the injuries to the casemate of the ram were very severe. On the after-side nearly all the plating was found to be started, the after gun-carriage was disabled and there were distinct marks of nine XI-inch solid shot having struck within a few square feet of that port. The only shot that penetrated the casing was the one XV-inch from the Manhattan. Three port shutters were so damaged as to stop the firing of the guns.