The USCGC Acacia (WLB 406) was second to the last of a fleet of 39 similar 180-foot seagoing buoy tenders completed during World War II. The Acacia was named after the United States Lighthouse Service ship Acacia, the only Lighthouse Service vessel sunk during World War II. The Acacia is a multi-purpose vessel, nominally a buoy tender, but with equipment and capabilities for ice breaking, search and rescue, fire fighting, logistics, and other tasks as well.