Thanks, Sandra.
I finally found a youtube of the Union Choir singing it, and have most of the words - know there are a couple of errors too!

The Wind and The Waves   by Matt Woolley

Farewell to my native shores   
I'm leaving you today
Farewell to the woman that I adore
Van Diemen's Land awaits me


Love and home lie to the rear         
I'm leaving you today
The 'William Metcalf' is so drear         
Van Diemen's land awaits me


CHORUS:
        Oh the wind and the waves,   
The deep oceans swell
        The winds are oft changed    And the waves are farewelled


Now my lot is five foot square         (I'm leaving you today)
I've penned my misery to share         ( Van Diemen's Land awaits me)


Blessed relief I've time on deck        (I'm leaving you today)
Clinking chains keep us in check (Van Diemen's Land awaits me)

                        
                                CHORUS

God's wonders are on display                 ( I'm leaving you today)
Turtle whales and dolphins play                 (Van Diemen's Land awaits me)


On Roaring Forties albatross glide         
(I'm leaving you today)
Creation's joy leaves me inspired         
(Van Diemen's Land awaits me)

                                CHORUS

One hundred days and still twelve more
(I'm leaving you today)
Finally sight Van Diemen's shore         
(Van Diemen's Land awaits me)


River runs from mountain pass                 
(I'm leaving you today)
Sullivan's cold,(?) my journey's nigh        (Van Diemen's Land awaits me)


                                CHORUS x 2