Statistics for occurrence #1 of “Acting-Master, Jacob Westervelt” in chapter 41 of Admiral David D. Porter, The Naval History of the Civil War.:

...g-Volunteer-Lieutenant, G. W. Graves; Acting-Ensigns, J. Q. A. Davidson and Abram Hicks; Acting-Master's Mate, E. S. Austin; Engineers: Acting-Third-Assistants, J. T. Miller and Samuel Dean. Acting-Master, Jacob Westervelt ; Acting-Assistant Surgeon, L. R. Boyce; Acting-Assistant Paymaster, E. H. Sears; Acting-Master's Mates, W. K. Engell, Daniel Ward, C. A. Stewart and John McCormick; Engineers: Acting-Second-Assistant...
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