Tropical Shipping in South Florida ships internationally in containers. It can be containerized, or as deck cargo on a trailer. They shrink-wrap all deck cargo. You'd undoubtedly have to ship from Miami here on the East coast. Tropical shipping buys deck space of Japanese and Korean ro-ros when they're headed home. My brother shipped a car from Jax to Okinawa in a container three years ago. Cost was about $4K not counting import duty on the car, which was British. (American cars are much more)
Allmand Boats in Miami sells a variety of Chinese made fiberglas boats, including a copy of the 20' SeaCraft SF.
You can see it here.
Check out their website. You can order the boat shipped directly to you in AUS. Perhaps someone in Miami could check out the boat model for you?
__________________
Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury