.. I seem to think it did a few trips to the Antarctic.
I have no way of being sure whether VH-PMY is in this photo but .. if she was still operational in '81 then there might be a chance that she was the Hughes on the right.
A view of the helideck aboard the MV Nella Dan as she pushes through pack ice in Antarctica on 30th November 1981. Bell 206 VH-WNB in the foreground with two Hughes 500C's in the rear one of which (on the left side of the photo) is most likely VH-BAG