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

...injury. Meantime the Ceres, Acting-Volunteer-Lieutenant J. Macdearmid; Lockwood, Acting-Volunteer-Lieutenant G. W. Graves; the sloop Granite, Acting-Master E. Boomer, and, finally, the Hunchback, Lieutenant-Commander McCann , were dispatched by Commander Davenport to the relief of the besieged forces at Washington, but they were stopped below Hill's Point by the re-establishment of the enemy's batteries there, and by the...
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