Where does it say that in the Rules?
NUC means a vessel through some exceptional circumstance cannot maneuver as
required by these rules .... a becalmed sailboat with no mechanical power seems
to fit this bill perfectly.
Wrong! Being becalmed is a normal navigational situation for
a sailboat. It cannot be considered an exceptional circumstance.
Exceptional circumstance mostly means a mechanical failure of
some sort. Steering hydraulics kaput on a motor vessel would
make her a NUC. Broken rudder on a sailboat would make
her a NUC. Shen I'm disappointed in your response. You
are clearly ignorant when it comes to sailing.