From: Dictionary of American Fighting Ships
Former name retained.
Efco (No. 2405), a motorboat, was placed in service on 12 March 1918 and assigned to the 5th Naval District for duty with the assistant district communications superintendent, NOTS. She was returned to her owner on 7 October 1919 and stricken from the Navy List.
Transcribed by Yves HUBERT (firstname.lastname@example.org)