The engagement had lasted just ten minutes according to "Shannon"s log, or eleven minutes by Lieutenant Wallis' watch. Broke more modestly claimed fifteen minutes in his official despatch. "Shannon" had lost 23 men killed, and had 56 wounded. "Chesapeake" had about 48 killed, including four lieutenants, the master and many other of her officers, and 99 wounded. "Shannon" had been hit by a total of 158 projectiles, "Chesapeake" by 362 (these figures include grapeshot). In the time the batteries of both ships were firing, the Americans had been exposed to 44 roundshot, whilst the British had received 10 or 11 in reply (these are figures for shot which would have produced casualties or material damage; some of "Chesapeake"s shot was fired low, bouncing off "Shannon"s side at waterline level). Even before being boarded, "Chesapeake" had lost the gunnery duel by a considerable margin.