Navigation light side of the vessel, a flashing green on the starboard side of the vessel, two flashing white lights on the top and one flashing yellow on the bottom side of the fuselage. The SpaceX Dragon cargo spacecraft also features a flashing strobe along with red and green lights. Navigation light A navigation light, also known as a running or position light, is a source of illumination on a vessel, aircraft or spacecraft. Navigation lights give information on a craft's position, heading, and status. Their placement is mandated by international conventions or civil authorities. Navigation lights are not intended to provide
Port and starboard is the left-hand side and the starboard side is the right-hand side. However, port and starboard never change; they are unambiguous references that are "not" based on the relative directions of an observer, just as the cardinal directions of east and west do not change no matter the direction a person faces. The term "starboard" derives from the Old English "steorbord", meaning the side on which the ship is steered. Before ships had rudders on their centrelines, they were steered with a steering oar at the stern of the ship on the right hand side of the ship, because more