... the horizontal at the anchor. The procedures for design of the mooring line is given in detail in a NAVFAC design manual, reference 10. ... appears to be adequate. Retrieval of the Mooring System using a Utility Boat The small mooring system was retrieved using the UTB by first maneuvering the UTB so that the operator could bend over the side of the UTB and grab the crown line or the crown buoy. 26.