All travellers coming to Canada by land or air, are required to provide travel, contact and quarantine information through ArriveCAN, within 72 hours of their arrival.. Marine travellers are strongly encouraged to use ArriveCAN. Due to technological limitations at sea, you can provide your information upon entry to Canada. This is part of Canada's efforts to reduce the spread of COVID-19 and prevent importation of the virus. This information is crucial to Canada's response to COVID-19. Paper forms can be incomplete or inaccurate, and can take days to process. To help provinces and territories protect their citizens, the Government of Canada has moved to a safer and faster paperless process.