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. 2023 Jan 18;9(3):eabp8200. doi: 10.1126/sciadv.abp8200

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Fig. 4. — (A) The top 40 ports where most reflagging practices involving at least one foreign flag are identified. The size of the circle indicates the number of instances. Blue represents reflagging instances involving one foreign flag and one national flag (either previous flag or destination flag), whereas red indicates reflagging between foreign flags with respect to the flag of the port. (B to D) Each diagram represents the flow of reflagging among flag states (from the previous flag to the destination flag with a weighted arrow) at the top three foreign reflagging ports (identity changes from national flag to national flag are included for comparison). See Fig. 3 for ISO-3166 country codes.