What does ETA stand for and how is it used?

• A. Equal Time of Approach; used for pilot transfer times.
• B. Estimated Time of Arrival; used to predict when the vessel will reach its destination.
• C. Electronic Time of Anchorage; used to log harbor entries.
• D. Estimated Time of Aground; used for safety clearance.

Answer: (B)

Estimated Time of Arrival, or ETA, is the best answer. In maritime practice, ETA is the best prediction of when the vessel will reach its destination. It guides port calls, pilotage, berthing, tug arrangements, and docking windows, and it’s the timing you’d share with authorities, customers, and the ship’s crew. The ETA is worked out from the vessel’s current position, speed, and remaining distance to the destination, and it’s updated as new position reports come in and conditions change, such as wind, currents, or routing adjustments. It’s expressed in local time and can be communicated via radio or AIS. Remember, an ETA is an estimate, not a guaranteed arrival, because conditions can shift and lead to adjustments. The other terms don’t correspond to standard nautical usage for predicting arrival times.