If more than what percent of the crew have not participated in abandon-ship and fire drills onboard in the previous month, drills must be completed within 24 hours of leaving port?

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The key idea is ensuring crew readiness by tying departure drills to how many crew members have actually practiced the procedures. If more than 25% of the crew have not participated in abandon-ship and fire drills during the previous month, the vessel must complete those drills within 24 hours of leaving port. This threshold means that once participation falls below 75%, you take immediate action to refresh training before sailing, so a substantial portion of the crew has current, hands-on practice.

For example, on a 40-person crew, if more than 10 crew members (more than 25%) did not participate last month, the ship must conduct the drills within 24 hours of departure. If participation is at or above 75%, the 24-hour requirement isn’t automatically triggered. The emphasis is maintaining practical readiness across the crew prior to venturing offshore.