In 1919 the indomitable Smith brothers, Ross and Keith flew a WWI bomber plane across the world in an open cockpit, without a radio and with nothing more than some sea charts to guide their way. To help them with their final leg of the journey across the Timor Sea, the Australian navy helpfully despatched HMAS Sydney to sit off the coast of northern Australia, pointing her bow in the direction of Darwin. To the ship's crew's surprise, not only did the plane fly over exactly on course for Darwin, but it also left behind a pickle bottle floating down from on high with the help of a parachute, containing the message "Many thanks for looking after us. Going Strong". That the bottle and its message survived the drop is a fitting tribute to the truly pioneering and epic spirit of the Smith Brothers.