Archer Point Light by the Commonwealth between 1964 and 1979. By order of construction the lights were Cape Capricorn Light, New Caloundra Light, Point Danger Light, New Burnett Heads Light, Fitzroy Island Light, Point Cartwright Light and itself. The light characteristic shown is four flashes, separated by two seconds, every twenty seconds, White at 153°-276°, 305°-313° and 334°-338°, Green at 276°-305° and 320°-334°, Red at 313°-320° and 338°-358° (Fl.(4)W.R.G. 20s). The white sector indicates the clear passage into the channel, while the red and green sectors indicates the ship is outside the channel. The current light source is a 35,000 cd 120 Volt
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