Tim O
Well-Known Member
Funny you should mention Colregs
Rule 20
(b) The Rules concerning lights shall be complied with from sunset to sunrise and during such times
no other lights shall be exhibited, except such lights as cannot be mistaken for the lights specified
in these Rules or do not impair their visibility or distinctive character, or interfere with the
keeping of a proper look-out.
So presumably between sunrise and sunset it would be fine to use these as a means of attracting attention?