Additional Navigation Lights--Rule 27 etc.

[thinwater]

I see threads with hundreds of posts discussion what lights should be show when lying to a sea anchor, sleeping while singlehanding, or most recently, swimming while drifting. But what no one ever answers is...

1. Do they ever use these lights?
2. What product do they use?

I see nav lights for commercial boats that are intended for stacked (1 or 2 meter spacing, depending on boat size) installation, but nothing for smaller boats.


I wonder what the USCG actually expects, knowing that no recreational boat has the hardware to display anything other than normal running and anchor lights? I suspect that is all they expect, though if I were night diving on any regular basis, the correct lights seem smart.