This page has been created to allow seafarers to quickly calculate their seatime for applications for Certificates of Competency. We utilise the system of calculation used by the UK Maritime and Coastguard Agency.

Enter the ship name, join date and leave date and click the 'Calculate' button to calulate the length of the trip. The result will be added to a grid and subsequent trips can be added by entering the relevant details and clicking the 'Calculate' button for each trip.