Australian Kayaker and his brother have been found guilty of trying to smuggle $ 200m ($ 152m; £ 109m) cocaine into the domestic territory.
Nathan Baggaley and Dru Baggaley will be sentenced later this month. Both have pleaded not guilty.
Dru and another man were arrested in 2018 after a massive maritime chase that involved the navy and air force.
Nathan bought a boat for the occasion.
Dru and another man, Anthony Draper, took an 11-hour trip in June 2018 to meet an overseas ship carrying drugs.
However, they were spotted by patrol planes and followed by a submarine. Footage captured Dru throwing packages of cocaine overboard while Draper attempted to get away from the ship.
They were later caught by a Queensland police boat off the coast and arrested by armed police.
Dr said he thought he was collecting cigarettes and not cocaine and said he was abducted by Draper and made a long trip. He said Draper threatened his family if he did not help him.
However, Draper said he was hired by Dru to operate the boat and that he was allegedly told they were picking up “smoko” which he assumed was marijuana.
Draper pleaded guilty to importing cocaine earlier this year but his sentence was reduced to testify against the Baggaley brothers.
Prosecutors said that Nathan – who won two medals at the Athens Olympics – was involved in the program, bought a boat and installed it with satellite equipment and a navigation system.
But he told the court that the boat was bought with money given to him by Dru and that he was told it would be used to start a whale watching business, reports ABC News.
His fingerprints were also discovered on tape used to conceal the boat’s registration number.
It isn’t the first time the two brothers have been charged with drug offences. They have previously been convicted of involvement in a drug manufacturing group that made hallucinogenic tablets. They were also convicted in 2009 on other drug charges.
According to ABC News, they could both face life in prison.
