Tug with a tow of over 200m
Sailing vessel under power
Engaged in fishing
Gear extending more than 150m
Usually a fishing vessel
Divers down, stay clear
Minesweeping
Not under command
Restricted in ability to manoeuvre
Engaged in underwater actions
Pass on the side with diamonds
Constrained by draught
Pilot vessel on duty
Vessel anchored
Vessel aground