 The daily rate of the watch was therefore fixed as losing 24/9 seconds per day.When "Deptford" reached its destination, after correction for the initial error of 3 seconds and accumulated loss of 3 minutes 36.5 seconds at the daily rate over the 81 days and 5 hours of the voyage, the watch was found to be 5 seconds slow compared to the known longitude of Kingston, corresponding to an error in longitude of 1.25 minutes, or approximately one nautical mile.William Harrison returned aboard the 14-gun , reaching England on 26 March 1762 to report the successful outcome of the experiment.