The colregs talk about anchor lights in Rule 30. Sometimes it will say vessels
under 7 meters don't have to show the shapes described in parts (a) and (b).
Sometimes it will say lights and shapes. Parts a and b talk about lights and
shapes. So what's it really saying. Does a small sailboat less than seven meters
long have to show an anchor light or not.
Thanks for helping... http://www.navrules.com/index.html There's a nice
Nav Rules program for windows for free at the link.

Cheers,
Ellen