e/USCG aids to navigation boat

Information
has gloss	eng: The United States Coast Guard maintains roughly 145 Aids to Navigation Boats(ANB). These boats were designed primarily to serve within the inland waters of the United States. However, the 55' ANB is often employed to service offshore aids as well.
lexicalization	eng: USCG aids to navigation boat
instance of	c/Boats of the United States Coast Guard