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Ocean Freight Teams Learn to Read the Gap Between Carrier and Predicted Arrivals

Shippers increasingly monitor the spread between carrier-issued ETAs and real-time arrival predictions rather than treating them as competing forecasts. Carrier ETAs remain the official baseline that operations teams and customers plan around, with lines improving reliability across the industry. However, these scheduled estimates update on fixed intervals, while real-time predictive signals built from vessel position data, speed tracking, port congestion metrics, and historical routing patterns refresh continuously. The most sophisticated freight teams have abandoned the practice of choosing one number to trust. Instead, they watch the distance between the two estimates as a meaningful operational signal.