When Is Testing Required after a Serious Marine Incident?

Under 46 CFR 4.06-3, when a marine employer determines that a casualty or incident is, or is likely to become, a serious marine incident, each individual on board who is directly involved must be tested. Alcohol testing takes place within 2 hours of the incident unless safety concerns directly related to it prevent that, and it is not required more than 8 hours after. Drug test specimens are collected within 32 hours, subject to the same safety exception.