🔍 Key Concepts

• 33 CFR 155.450 – Placard requirement: "Discharge of Oil Prohibited" • Difference between U.S. vessels and foreign vessels in U.S. navigable waters • Whether vessel length or type of service (commercial vs. noncommercial) matters for this placard

💭 Think About

• Ask yourself: Is this placard tied to being in U.S. waters, to flag state (U.S. vs. foreign), to length, or to commercial status? • Look at which answer choices mention vessels that are clearly outside U.S. jurisdiction and which are within it. • Consider whether very small recreational boats are treated the same as larger vessels when it comes to pollution-prevention placards.

✅ Before You Answer

• Verify in 33 CFR 155.450 whether there is a minimum length specified for the placard requirement. • Confirm whether the regulation applies to both U.S. and foreign vessels while in U.S. navigable waters. • Check if the rule distinguishes between commercial and noncommercial service for this particular placard requirement.