🔍 Key Concepts

• Dry docking and internal structural examination (ISE) requirements for small passenger vessels • Difference between domestic routes and international voyages under 46 CFR Subchapter T or K • How the required interval is usually expressed (in years vs. months) in the regulations

💭 Think About

• Convert each choice from months into years and ask: Which interval sounds consistent with a regular survey/inspection cycle for passenger vessels on international voyages? • Think about whether international service usually requires more frequent or less frequent inspection than purely domestic service. • Recall that the regulations often speak in terms of "at least once every X years" or "twice in Y years"—which of these answer choices best matches that idea when converted to years?

✅ Before You Answer

• Convert all four options from months to years before comparing them. • Ask yourself whether a 5-year gap or a 3-year gap between dry dockings would be acceptable for a passenger vessel carrying people on international voyages. • Verify in the current regulations whether the rule talks about "twice in a 5‑year period" with a maximum interval between dry dockings, and then match the maximum-interval language to one of the choices.