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
Container ship first coordinate is the "BAY", which starts at the front of the ship and increases aft. The second coordinate is "TIER", with the first tier at the bottom of the cargo holds, the second tier on top of that, and so forth. The third coordinate is the "ROW". Rows on the starboard side are given odd numbers and those on the port side are given even numbers. The rows nearest the centerline are given low numbers, and the numbers increase for slots further from the centerline. Container ships only take 20 foot, 40 foot, and 45 foot containers. 45 footers