🔍 Key Concepts

• Western Rivers / inland river navigation requirements in 33 CFR and 46 CFR • Purpose of the U.S. Coast Pilot, Tide Tables, Sailing Directions versus river-specific publications • Role of the U.S. Army Corps of Engineers on major inland rivers like the Ohio and Mississippi

💭 Think About

• Ask which publication is specifically issued for inland rivers and locks/dams on the Mississippi and Ohio systems, rather than coastal or ocean waters • Think about which book a towboat pilot on the Upper Mississippi would actually need for locks, dams, channel conditions, and river regulations • Eliminate the options that are clearly for sea coasts and oceans rather than inland rivers above Cairo, Illinois

✅ Before You Answer

• Verify which publication contains Corps of Engineers regulations, lock rules, and river navigation information for inland rivers • Check which options are mainly used for coastal navigation (harbors and approaches, ocean routes, tides) and see if those fit an Ohio/Mississippi river context • Confirm which publication is commonly known on the rivers as a required regulatory book rather than just a general reference