Comment by mcswell

I was once in the US Navy, and stood many a bridge watch. When it got dark, all outside lights except for the navigation lights (red light on port bow, green on starboard bow, a white light up top and another white light on the stern). And on the bridge, we used only dim red lights, to avoid affecting our night vision. None of the navigation lights was easily visible from the bridge. And you could see reasonably well, even on a cloudy night.