🔍 Key Concepts

• 33 CFR Part 151 – Vessel Pollution Control and related pollution prevention definitions • How “new ship” is usually defined in international conventions like MARPOL and then adopted into 33 CFR • The difference between dates tied to keel laying, building contract, delivery, and major conversion

💭 Think About

• Compare which events (keel laying, contract date, delivery date, or major conversion) are most often used in regulations to mark when a ship becomes a new ship for pollution rules. • Look at the specific years and dates in each option and think which one best matches MARPOL-style definitions used in U.S. regulations. • Decide whether major conversion is part of the basic “new ship” definition or is usually treated as a separate case in the regulations.

✅ Before You Answer

• Verify in 33 CFR 151.05 (Definitions) how “new ship” is actually worded. • Check whether the key date in the definition is tied to contract placement, keel-laying, or delivery. • Confirm if major conversion is listed inside the “new ship” definition or addressed in a separate definition like “existing ship” or “major conversion.”