🟥 SUBJECT: ETA COMPUTATION For future seafarers, calculating ETA (Estimated Time of Arrival) is an important task on board the ship. It can be done in two ways—manually and automatically. Automatic calculations, like those from ECDIS or ship computers, give quick results using real-time data. Manual computation uses the basic formula of distance, speed, and time. Understanding both methods ensures accuracy, allows for verification of results, and provides preparedness in the event of technologi