It is white and shows an 135 degree arc of visibility, or 67.5 degrees right or left of stern. Please refer to rule 21 of the Navigational Rules of the Road. A link is provided below.
White
white
A sternlight is a white light on the back end of a boat or ship. The configuration depends on the size of the boat. Some small boats have an all around white light. Bigger boats have a light that shows only over an arc of 112 degrees facing aft.
A boat's sternlight is typically white. It is positioned at the stern (rear) of the vessel and is used to indicate the boat's presence to other vessels from behind. The white light must be visible from a specific distance, ensuring safety during nighttime navigation.
Mel Sternlight was born on June 4, 1916, in Pennsylvania, USA.
Mel Sternlight died on September 3, 1975, in Los Angeles, California, USA.
Still red.
blood in the vessels uderneath
All vessels that are moored or anchored outside a designated mooring area between sunset and sunrise must display a white light visible all around the horizon. This light serves to indicate the vessel's presence to other mariners. Additionally, larger vessels may also be required to show sidelights and a sternlight, but the white anchor light is essential for all.
Blood vessels appear green or blue in color due to the way light interacts with the skin. This hue is not the actual color of the blood vessels, but rather a visual effect caused by the absorption and reflection of light. In reality, blood vessels are typically a reddish hue due to the presence of red blood cells.
The villi in the small intestine are typically a pinkish color due to the presence of blood vessels.
The spleen is typically a dark purplish-red color due to its high concentration of blood vessels.