USCGC Firebush (WLB-393) was an Iris-class buoy tender belonging to the United States Coast Guard launched on 3 February 1944 and commissioned on 20 July 1944.

[1] She was eventually transferred to the Nigerian Navy in June 2003 and renamed Nwamba.

This was connected up to two Westinghouse generators which were driven by two Cooper Bessemer GND-8 four-cycle diesel engines.

[2] Firebush was first assigned to the 3rd Coast Guard District and homeported in St. George, Staten Island, and later to Governors Island, New York, where she was used for ATON duties during the end of World War II.

[1] In June 1979, she was transferred to Kodiak, Alaska to assist with ATON in Alaskan waters.