What type of aquatic unit is XXX?
USCGC Southwind (WAGB-280)
USCGC Southwind (WAGB-280) was a Wind-class icebreaker that served in the United States Coast Guard as USCGC Southwind (WAG-280), the Soviet Navy as the Admiral Makarov, the United States Navy as USS Atka (AGB-3) and again in the U.S. Coast Guard as USCGC Southwind (WAGB-280).
Wind-class icebreaker