PART C - LIGHTS AND SHAPESRule 20 - Application
(a) Rules 20-31 shall be complied with in all weathers.
(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 which 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.
(c) The lights prescribed by these Rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary.
(d) The Rules concerning shapes shall be complied with by day.
(e) The lights and shapes specified in these Rules shall comply with the provisions of Annex I of these Rules.
(f) A vessel’s navigation lights and shapes may be lowered if necessary to pass under a bridge.
And we begin Part C of the Navigation Rules Lights and Shapes
Hot ticket item with me who spends a great amount of time with passengers aboard after sunset