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
USS Starboard Unit (1918) Marsh on 5 March 1919. USS Starboard Unit (1918) USS "Starboard Unit" was a United States Navy patrol vessel acquired in 1918 but never commissioned. "Starboard Unit" was built as a civilian motorboat of the same name. On 5 November 1918, the U.S. Navy acquired her under a free lease from her owner, Joseph W. Marsh, for use as a section patrol boat during World War I. World War I ended on 11 November 1918, six days after "Starboard Unit"s acquisition. No longer needed for naval service, "Starboard Unit" never received a section patrol (SP) number and was never commissioned.