Port is red, starboard is green.
A rhyme is "wine is red and there's little left in the bottle."
Green
The color light that must show on the starboard side of a boat is green. This green light is part of the navigation lights used to indicate the direction the vessel is facing and helps prevent collisions at night or in low visibility conditions. The starboard (right) side green light is typically visible from 112.5 degrees, along with other navigation lights on the vessel.
The starboard side of a vessel is indicated by a green light. This color is used to help identify the orientation and direction of the vessel, especially when navigating at night or in low visibility conditions. The port side, in contrast, is marked by a red light. Together, these colored lights help prevent collisions at sea.
The starboard sidelight is green. It is one of the navigation lights on a vessel, indicating the right side when facing forward. The corresponding port sidelight is red. Together, these lights help to communicate a boat's direction and orientation to other vessels at night or in low visibility.
In darkness or reduced visibility, the white light indicates a vessel's stern, while red and green lights indicate the port (left) and starboard (right) sides, respectively. A vessel displaying a red light is facing another vessel, while a green light indicates it is on the starboard side. This color coding helps mariners determine the direction and type of vessel they are encountering, ensuring safe navigation.
The color that indicates starboard on a vessel is green. In maritime navigation, the starboard side is the right side of the ship when facing forward. This is contrasted with the port side, which is indicated by the color red. These colors help ensure safe navigation and prevent collisions at sea.
Starboard lights are green to help distinguish the right side of a vessel from the left side, which is indicated by red lights on the port side. This color coding helps prevent collisions at night or in low visibility conditions by allowing mariners to easily identify the orientation and direction of approaching vessels. The use of standardized colors—green for starboard and red for port—has been established by maritime navigation rules to promote safety at sea.
A commercial vessel towing at night displays a white towing light above the stern of the towing vessel and a second white light at the stern of the tow. Additionally, the vessel should show a green light on the starboard side and a red light on the port side, as well as an all-round white light at the stern of the vessel being towed. These lights help indicate the vessel's activity and ensure safe navigation for other vessels.
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).
Red marks the Port or left side. (Green is Starboard or the right-hand side.) Port
The color light on the starboard side of a vessel is green. This green light is used to indicate the right side of the ship when facing forward. It is part of the navigational lighting system that helps other vessels determine the direction a ship is facing and its orientation at night or in poor visibility conditions.
Red