. . . "Federal" . . . . "Union gunboats" . . . . "Federal ship" . . . . "Blue and gold" . . . . . . . . "naval" . "Union warship" . . "gunboats" . . "United States (Union) Navy during the civil war" . . . . "Federal forces" . . . . . . . "Union naval bases" . "Union Naval" . . . . . "navy" . . . . . "US Navy" . . . . . . . . . . . "Union forces" . . . . . . "Union Navy" . . . . "Union navy" . . . . . "Union Navy" . . . . . . . "Union" . . . . . . . . "84,415 personnel" . . "Navy" . . . . . . "Maritime security" . . "Union sailor" . . . . . . "USN" . . . "Union's" . . . "sailor" . . . . . . . . . . . "Union gunboat" . . "\\\"Semper Fortis\\\" (" . "Union Navies" . "United States Navy" . . . . . . . . . . . . . . . . . . . . . . . . . "Union Navy's" . . "\\\"Always Courageous\\\"" . . . . "U.S. Navy" . . "Union naval" . . . . . . . "), (official)" . . . . . . . . "671 vessels" . . . "Sea control" . . . . . . . "Union fleet" . . . "Union Fleet" . . . . . "Union naval forces" . . . . "Union ships" . . . . . . . .