Who needs a D6?
If you are serving on a ship with a gross tonnage of less than 500 in the small coastal shipping area, excluding passenger ships and fishing vessels, which
- the officer in charge of the watch on a ship with a length (L) of less than 24 meters
- deck officer on a ship with a length (L) of less than 24 meters
- as a master on a ship with a maximum length of less than 15 meters