The cannon from the HMS Bounty, which was scuttled and sunk by mutineers in 1790, has been returned to Pitcairn Island.
It will now be put on show, 10 years after it was recovered from the sea and having been restored in Brisbane.
The Pitcairn Island commissioner Leslie Jacques, says people on the island are delighted to have the cannon back.
He says it will be displayed at the Pitcairn Museum, alongside the Bounty's bible which was also recovered from the wreck.
Mr Jacques says the Pitcairn Island site where the Bounty is resting is popular with divers.