This Day in U.S. Coast Guard History - April 11
1917- With the outbreak of World War I, the President issued an executive order transferring 30 lighthouse tenders to the War Department. All were subsequently assigned to the Navy Department and 15 lighthouse tenders, four lightships, and 21 light stations also were transferred to the Navy Department. One more tender was transferred on 31 January 1918 making a total of 50 vessels and 1,132 persons. The War Department used those assigned in laying submarine defense nets during and in removing these defenses after the war. Other duties performed by these vessels were placing practice targets, buoys to mark wrecks of torpedoed vessels and other marks for military purposes, as well as being employed on patrols and special duty assignments.