Flat Top Island Light

[2] At 6 metres (20 ft) from the ground to the lantern floor, it is the shortest of Queensland's timber-framed iron clad lighthouses.

[8] As typical for lighthouses of that period in Queensland, the tower is conical in shape, built of an internal timber frame, clad with galvanized iron plates.

The height of the tower is 20 feet (6 m) from the ground to the balcony, making it the shortest of the composite lighthouses ever built in Queensland.

[11][8] The permanent light installed was a fixed fourth order dioptric and was visible for 19 nautical miles (35 km; 22 mi).

[15] The last light characteristic displayed was four flashes every twenty seconds, red and white depending on the direction (Fl.(4)W.R.

Plan of Flat Top Island, showing the location of the lighthous
Plan of the lighthouse, 1877