Tri-color Steaming masthead light as only nav light?

[SlowButSteady]

Originally Posted by MarkSF

According to the data on the USCG website, when a sailboat is under power, an all round white light is only legal in international waters.

Dang. I was about to say that.

Inland rules differ from the COLREGS in only a very few ways, but this happens to be one of them. You might also not that a small white light is much harder to see against a background of shore lights than are red and green nav lights (which are plenty hard enough to pick out, at times).