a sail boat is heading straight at you
The same thing it does during the day.
Photosynthesis
A starless night refers to a night sky that lacks visible stars due to factors such as light pollution, cloud cover, or the position of the Earth in relation to the stars. It can create a dark and potentially eerie atmosphere that is devoid of the usual celestial beauty.
The phrase "At night a candle's brighter than the sun" is likely a metaphorical statement emphasizing the relative brightness of a small source of light in the darkness compared to a much larger source of light in the daytime. It suggests that even a small amount of light can have a significant impact in dark or difficult situations. This metaphor can be interpreted as highlighting the power of hope, positivity, or resilience in challenging circumstances.
Good night
The same thing it does during the day.
a sail boat is heading straight at you
A green light is on the starboard side of the vessel. So it may mean that the starboard side is directly facing you.
a sailing vessel is approaching head on and you must give way
Navigation lights, green starboard and red port. Masthead and stern lights should be white
The Green Beans Green Warriors The Mean Greens The Mean Green Team
If you are operating a powerboat and see only a green light on another boat, that is a sailboat. The green light means you must give way.In a crossing or meeting situation it could mean you have the right away, however there needs to be more information to better answer the question. It does however mean that in some capacity you are observing the vessels starboard (right) running light.
fishing at night
Sailing vessel is approaching head on you must give away
Sailing vessel is approaching head on you must give away
Sailing vessel is approaching head on you must give away
Blue what ? ! ? Do you mean an object that appears blue in white light ? Such an object appears black in green light.