🔍 Key Concepts

• 46 CFR regulations on tailshaft examinations and inspection intervals • Authority and role of the Officer in Charge, Marine Inspection (OCMI) • Which entities in the choices are Coast Guard regulators vs classification societies or other organizations

💭 Think About

• Ask yourself: which of these choices clearly represents a U.S. Coast Guard authority who routinely grants inspection or exam extensions? • Consider what type of organization the American Bureau of Shipping is and whether it usually has regulatory power to change federal inspection intervals. • Think about which listed offices or titles you have actually seen referenced in 46 CFR text about inspections and exams.

✅ Before You Answer

• Verify in 46 CFR that extensions of inspection or examination intervals are granted by a Coast Guard authority, not a private organization. • Check whether "Commandant CG 543" is a current, specific office designation still commonly seen in newer parts of the CFR, or an older/less likely reference. • Confirm which answer choice clearly matches the wording you see repeatedly in 46 CFR for who may approve or extend inspection intervals.