I consume canabis on a regular basis. Does this make me unfit for sea service?

Yes, the regular consumption of cannabis makes one unfit for sea-service. Smoking cannabis regularly leads directly to lesser performance in perception, attention and the capacity of reaction. In addition several substantial side effects can occur – among other things, sedation, sleepiness, diarrhoea, nausea, vomiting or fever. There is a difference whether one consumes cannabis in a private setting (legally or illegally, is not relevant) or in a professional capacity on board a sea-going vessel, where an emergency or rescue situation that requires a minimum degree of capability may occur at any time.