Sources
Every claim you read on CaptainsGround maps to one of these. We don’t generate facts from training data; we generate explanations from cited primary sources.
33 CFR — Navigation and Navigable Waters
Inland Navigation Rules + USCG operating rules.
ecfr.gov · Title 33
46 CFR — Shipping
Subchapters T (small passenger vessels) and B (mariner credentialing).
ecfr.gov · Title 46
COLREGs (72 COLREGS)
International Regulations for Preventing Collisions at Sea — 38 rules.
IMO · public domain
Bowditch — American Practical Navigator
NGA. Public domain. Reference for celestial, dead reckoning, charts.
NGA Pub. 9
USCG Boatswain's Mate / Coxswain's Mate manuals
Public-domain US Coast Guard training texts.
USCG · public domain