Question 2768 Deck General

The correct answer is B) 2 hours. Following a Serious Marine Incident, regulations require a mariner directly involved in the incident to submit to alcohol testing within 2 hours. This requirement is outlined in 46 CFR 4.06, which states that post-incident alcohol testing must be conducted "as soon as practical, but no later than 2 hours after the occurrence of the incident." The other answer choices are incorrect because 1 hour is too short of a timeframe, 6 hours is too long, and 12 hours is significantly outside the 2-hour requirement specified in the regulations.