Lights and Dayshapes
Anchored
Towing Astern - Tow over 200 meters
(200 meters or less - two masthead lights)
Fishing other than Trawling
Vessel Aground
Restricted in Ability to Maneuver
Not Under Command
Constrained by Draft
Tow over 200 meters - Restricted in Ability to Maneuver
Vessel Engaged in Trawling
Related Articles:
Nautical Mnemonics
Also see the Basic Boating Safety Course