Originally Posted by pdqaltair
"A vessel not under command has usually suffered a disability, which is not easy to predict or classify. An example would be a vessel with a disabled rudder. The navigation light requirement is, therefore, brief and general."
Not undercomand does not mean the captain is asleep, it means he cannot control the boat. There is a clear difference.
My understanding is that there is no correct marking for the simple reason that you are REQUIRED to keep watch. No out from this.
Yes - exactly. It is in the definition.
(f) The term "vessel not under command" means a vessel which through some exceptional circumstance is unable to maneuver as required by these Rules and is therefore unable to keep out of the way of another vessel.
The vessel has the disability, not the skipper and the crew. If that were the case there would be a lot of vessels with two red lights or two black balls.
Broken down engine and broken rudder are the classic examples.