3 luckily for tony ,the australian navy sent many planes and ships to find him .
they looked for almost five days , but could not find him .
then on 9 january , sailors on one of the ships , the HMAS Adelaide , saw the Exide Challenger .
it was upside down . they didn't know if tony was inside , and they didn't know if he was alive .
the sailors from the HMAS Adelaide knocked on the hull of the Exide Challenger .
they were very happy when tony knocked back !