Unverified50% confidenceFactExact time
AIS Class 1, 2, and 3 messages contain dynamic information updated every 2–10 seconds, while Class 5 messages contain static and voyage-related information broadcast every 6 minutes.
1
Sources
50%
Confidence
Long-term
Relevance
8/17/2026
First Seen
Sources
霍尔木兹海峡实时船舶追踪：AIS数据如何成为地缘风险观察窗口
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