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
Ambrose Light (ship) fire a shot over the vessel's bow when a Colombian ensign was observed and "Ambrose Light" came to a halt. Commander Clark put Lieutenant M. Fisher and a boarding party on the rebel ship and it was found to have been armed with one cannon and sixty heavily armed sailors. A large cache of ammunition was also discovered. The Colombians revealed their letter of marque from the rebel leader Pedro Lara, giving the men of "Ambrose Light" permission to blockade Cartagena. Commander Clark disregarded this and took the rebels prisoner and the brigantine as a prize. The ship was put