🔍 Key Concepts

• Serious Marine Incident (SMI) alcohol and drug testing requirements in 46 CFR Part 4, Subpart 4.06 • The specific waiting period during which a person directly involved in an SMI must NOT consume alcohol if testing has not yet occurred • The difference between the required time limits for conducting alcohol tests vs. the time a mariner must refrain from drinking after the incident

💭 Think About

• Look up the regulation that defines how long a mariner directly involved in an SMI must be available for alcohol testing without consuming alcohol. What is that exact hour limit? • Consider why the Coast Guard wants a specific minimum time with no alcohol consumption. Which of these options aligns with preserving accurate test results and is explicitly written in the CFR? • Separate in your mind: (1) how soon the company should try to test you, and (2) how long you personally are prohibited from drinking if you have not yet been tested. Which number in the options matches the personal prohibition period?

✅ Before You Answer

• Verify the rule in 46 CFR 4.06 that states: a person directly involved in a Serious Marine Incident must not consume alcohol for a specific number of hours after the incident unless they have already been tested. • Confirm that the time period in the CFR is one of the answer choices and is stated as a clear, single number of hours following the incident. • Make sure you are not confusing this with any separate time limits for drug testing or for how quickly the marine employer must begin alcohol testing. Focus ONLY on the mariner’s no‑alcohol period.