In 1958, Bill Kirkpatrick located the wreck and brought to the surface a barnacle-encrusted steel safe which they found in a cabin. When broken open with a pinch bar, hammer and chisel, the safe was found to contain nothing but black sludge. The only thing that offered a clue to identification of the ship was part of the safe's serial number—9825W. It was subsequently established that it was a Chubb strongbox and the number was sent to the manufacturers in London for tracing. In 1961, the reply came back that the safe was one supplied to the purser's cabin of the SS "Yongala" during her construction in 1903.