Section 140.645 - Navigation safety training(a) Prior to assuming duties related to the safe operation of a towing vessel, each crewmember must receive training to ensure that they are familiar with: (1) Watchstanding terms and definitions;(3) Communication with other watchstanders;(4) Change of watch procedures;(5) Procedures for reporting other vessels or objects; and(6) Watchstanding safety.(b) Crewmember training must be recorded in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel.(c) Credentialed mariners holding Able Seaman or officer endorsements will be deemed to have met the training requirements in this section.