Red marks the Port or left side. (Green is Starboard or the right-hand side.) Port
The green light would be located on the right, or starboard, side of the boat.
Left side, port, red light.Right side, starboard, green light.
Green
Red. Easy way to remember, port wine is usually red. The port side is on the left. The starboard side (right) is signified by a green light. Passing at night should be done on the "green" (safe) side when approaching another watercraft.
Starboard = Green = Right side. Port = Red = Left side. As an easy way to remember them look at the number of letters in each: starboard has more than port green has more than red right has more than left GRASS is green, so Green Right At Starboard Side
Starboard (right side).
All vessels at sea use a red light on the port side (left facing forward to front of vessel), and a green light on the starboard side (right).
The green light is right hand side or 'Starboard'
The right side of the vessel is the starboard side, the light is green. The light is coordinated to the starboard side of the vessel no matter how you look at it. Refer to Rule 21 of the 72 COLREGS, a link is provided below.
The green light would be located on the right, or starboard, side of the boat.
Starboard, ie the right hand side.