Statistics for occurrence #1 of “Lieutenant Irwin” in page 394 of Admiral David D. Porter, The Naval History of the Civil War.:

...est power of both men and guns, and exhibited the greatest effect of manhood and training. I beg leave to commend these officers in terms of the warmest praise, both for skill and conduct; and also Lieutenant Irwin , who, in command of the powder division, did everything that a brave and earnest man could do to make his ship efficient. Acting-Masters Lamson, Rowland and Robertson, in command of the spar-deck...
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