USCG inland buoy tender

USCG Inland Buoy Tenders.are vessels operated by the United States Coast Guard that maintain and replace navigational buoys on inland waterways. There are two classes of vessels.
The 100-foot Class Inland Buoy Tenders consists of the following boats:

USCGC Bluebell (WLI-313); Portland, Oregon,
USCGC Buckthorn (WLI-642); Sault Ste. Marie, Michigan,

The 65-foot Class Inland Buoy Tenders consists of the following boats:

USCGC Bayberry (WLI-65400); Oak Island (North Carolina),
USCGC Elderberry (WLI-65401); Petersburg, Alaska,