USCG-ENG-SEA-L2.2
Propulsion mode — the one-third rule
USCG-ENG-SEA-M2 · Recency, Modes and Deck Credit · USCG-ENG-SEA-M2-A The rules that quietly disqualify people.
Under 46 CFR 11.502, at least one-third of the minimum service for any engineer endorsement must be served on the specific propulsion mode sought, and this lesson explains both that arithmetic and the four distinct routes available for adding a new mode to an endorsement already held.
AI-drafted catalogue content pending SME review. Sea service crediting and manning requirements change, and enforcement practice on recreational vessels was not confirmed from primary sources; verify with the National Maritime Center and the cognizant OCMI before relying on this for a career decision.