The Cannabis Act and its regulations came into force on October 17 2018, thus making Canada only the second country worldwide to legalise recreational cannabis. For this reason, Transport Canada issued a bulletin to ensure the proper use of recreational cannabis by seafarers.
Namely, according to the subsection 253(1) of the Criminal Code, seafarers may not operate, assist in the operation of, or have the care or control of a vessel while impaired. This applies whether or not the vessel is...
https://safety4sea.com/canada-issues-bulletin-for-use-of-cannabis-by-seafarers/