To put a vessel into commission

(Naut.) to equip and man a government vessel, and send it out on service after it has been laid up; esp., <- to="" perform="" pcp="" -=""> the formal act of taking command of a vessel for service, hoisting the flag, reading the orders, etc.

See also: Commission

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.