Statistics for occurrence #1 of “Lieutenant-Commander McCann” in chapter 36 of Admiral David D. Porter, The Naval History of the Civil War.:

...uadron seemed to be well satisfied with the conduct of those under his command, and reported that the credit of the Navy had been well maintained throughout. Commander Renshaw, at Washington, and Lieutenant-Commander McCann , below on the river, conducted affairs with prudence and zeal. The former held a position of great responsibility and severe trial, and he met the various emergencies with promptness and decision. ...
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