: Defining specific transition periods—often 48 hours for top officers and 24 hours for other crew—to transfer essential ship knowledge.

The International Maritime Organization (IMO) provides a recommended framework of protocols for safe crew changes and travel.

If the port requires a PCR test 72 hours before boarding the vessel, the clock starts at the swab time , not the result time. Misinterpreting this has cost shipping companies tens of thousands of dollars in flight rebooking fees. Our PDF includes a "PCR Countdown Calculator."

Managers notify port authorities and agents at least 10 days in advance. This includes securing visas, confirming flight schedules, and arranging medical checks. Arrival & Disembarkation:

While there isn't a single "Crew Change Guide" that applies to every industry, the most authoritative and widely used document for global maritime operations is the

To ensure a smooth and safe crew change, the following best practices are recommended:

Because regulations change rapidly, always ensure you are downloading Version 4 or later (the "Post-COVID" editions).