USCG-ENG-SEA-L3.1
The 200 GRT line
USCG-ENG-SEA-M3 · When a Vessel Needs an Engineer · USCG-ENG-SEA-M3-A Manning — where the number actually comes from.
There are two pieces of primary text here and they say the same thing from different directions. Neither of them mentions yachts.
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.