Unity was a ship that went missing in 1813 off the coast of Tasmania, Australia.
Unity was a schooner and was moored in Hobart when on the night of 24 April 1813, between 11pm and midnight, a gang of seven armed convicts boarded the ship.
They seized the crew and the ship's owner, William Hobart Mansel, a merchant from Sydney, and held them captive as they sailed the ship down the River Derwent.
Off Cape Frederick they released their captives – Mansel, the captain and three seamen – and set them adrift in the ship's boat.
This article about a specific civilian ship or boat is a stub.