The same thing it does during the day.
A red and green light seen together at night typically indicates a navigation buoy marking a channel in the water. The red light is typically on the left (port) side of the channel when entering from seaward and the green light is on the right (starboard) side. This configuration helps boaters determine the proper direction of travel to safely navigate the channel.
Sail boat is coming at you
Sail boat is coming at you
When seen together at night, a red and green light typically indicates the presence of a boat or vessel navigating on water. The red light is usually displayed on the port (left) side of the vessel, while the green light is on the starboard (right) side. This color combination helps other vessels determine the direction the boat is facing and is crucial for safe navigation.
When you see red and green lights together at night, it typically indicates the presence of a vessel on the water. The red light is usually on the port (left) side, while the green light is on the starboard (right) side. This configuration suggests that the vessel is either heading towards you or is anchored. In aviation, it could indicate an aircraft's position or orientation, depending on the context.
a sail boat is heading straight at you
Navigation lights, green starboard and red port. Masthead and stern lights should be white
The red light is on the port side of the boat, while the green light is an the starboard side. So, if the boat in front is showing a red light on the left and a green light on the right, it is going away from you.
The red light is on the port side of the boat, while the green light is an the starboard side. So, if the boat in front is showing a red light on the left and a green light on the right, it is going away from you.
The red light is on the port side of the boat, while the green light is an the starboard side. So, if the boat in front is showing a red light on the left and a green light on the right, it is going away from you.
The red light is on the port side of the boat, while the green light is an the starboard side. So, if the boat in front is showing a red light on the left and a green light on the right, it is going away from you.
A red and green light seen together at night typically indicates a navigation buoy marking a channel in the water. The red light is typically on the left (port) side of the channel when entering from seaward and the green light is on the right (starboard) side. This configuration helps boaters determine the proper direction of travel to safely navigate the channel.
fishing at night
Sail boat is coming at you
A red light on the left and a green light on the right indicate that you are looking at the port (left) side of a boat that is heading toward you at night.
When you see only a red and green light on another powerboat at night, it indicates that the other vessel is facing you head-on or nearly so. The red light is on the port side (left) and the green light is on the starboard side (right), which means you should give way to that vessel to avoid a collision. It's important to maintain a safe course and speed while assessing the situation.
Red marks the Port or left side. (Green is Starboard or the right-hand side.) Port