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.
Corpus snapshot
1,054 chunks · 1,054 distinct citations · 100% embedded
33 CFR — Navigation and Navigable Waters
367 chunks · last ingested 2026-04-30Inland Navigation Rules + USCG operating rules.
ecfr.gov · Title 33
46 CFR — Shipping
563 chunks · last ingested 2026-04-30Subchapters T (small passenger vessels) and B (mariner credentialing).
ecfr.gov · Title 46
COLREGs (72 COLREGS)
not ingested yetInternational Regulations for Preventing Collisions at Sea — 38 rules (annexes covered separately under 33 CFR).
IMO · public domain
Inland Navigation Rules
not ingested yetParallel set of rules for inland US waters; codified at 33 CFR Subchapter E.
33 CFR §83
Bowditch — American Practical Navigator
25 chunks · last ingested 2026-05-01NGA. Public domain. Reference for celestial, dead reckoning, charts.
NGA Pub. 9
USCG Boatswain's / Coxswain's Mate manuals
24 chunks · last ingested 2026-05-01Public-domain US Coast Guard training texts.
USCG · public domain
Light List & Buoy Chart Symbols
75 chunks · last ingested 2026-05-01USCG Light List + Chart No. 1 buoy and aid symbols.
USCG · public domain