At Anchor 
Vessel Constrained By Draught 
Sailing Vessel Under Power 
Vessel Engaged In Fishing With Gear Extending More Than 150 m Horizontally From The Vessel. 
Fishing Vessel May Be Engaged In Trawling Or Fishing 
Vessel Towing Length Of Tow More Than 200 m
Vessel Engaged In Dredging Operations Restricted In Her Ability To Manoeuvre. Obstructed On Her Starboard Side Safe To Pass On Her Port Side.
Vessel Aground 
Vessel Engaged In Diving Operations 
Vessel Engaged In Mine sweeping Operations
Power Driven Vessel Towing Severely Restricted In Her Ability To Deviate From Her Coarse. Length Of Tow 200 m Or Less. 
Vessel Engaged In Dredging Operations Restricted In Her Ability To manoeuvre 
Vessel Not Under Command
Helping To Save Lives