The Australasian Steam Navigation Company (ASN Co) was a shipping company of Australia which operated between 1839 and 1887.
The company was started as the Hunter River Steam Navigation Company in 1839
In March 1851, the company was reformed as the Australasian Steam Navigation Company.
In 1887, the shipping company was amalgamated with the Queensland Steam Shipping Company with their respective vessels in 1887 to form the Australasian United Steam Navigation Company.
The company's ships included:
On 11 March 1847, the Sovereign was wrecked in the South Passage off Amity Point, North Stradbroke Island, Queensland with the loss of 44 lives; there were 10 survivors. While the actions of Captain Cape in the disaster were praised by the survivors, many questions were subsequently raised about the fitness of the vessel for the voyage. An inspection of the wreck showed that the planking and fastenings were not in good condition; the inner planking was described as "perfectly rotten". The engines were said to be suitable for river navigation but not for an ocean voyage to Brisbane. The storage of cargo on the deck was the direct cause of some deaths. There were no lifeboats (not being required at that time). The other concern was the use of the South Passage with its surf and shoals; while it was the shortest route from Sydney, it was not the safest entrance to Moreton Bay.
On 7 November 1862, the City of Sydney was lost at Green Cape, fortunately without loss of life.
In 1863, the Boomerang was stranded on the Upper Flats at Rockhampton.
In April 1866, the steamship SS Cawarra was wrecked at Newcastle with the loss of all but one man.
In October 1866, the steamship Telegraph was wrecked off Cape Perpendicular.