I enjoyed the chase a few times myself.
If a vessel is caught doing something illegal in Australian Territorail waters (Think 200 Nmiles), much can be done. If a vessel is seen in Australian Territory and move out, the laws of the chase require the vessel to be maintained in sight until they are boarded.
The vessel El Pinguino referred to got off because Australia
was not prepared to dislose the technique in how the vessel was discovered or observed before and after the chase commenced.
Anyway the last patrol I got involved in 9 of 10 fishes were legal
, not in Australian waters, were welcoming, the other was Chinese and they more or less said Foxtrot Oscar.
Think it got too hard, and very costly, for little benefit. I don't believe any Australian Fisher
is interested in Tooth fish