Have looked high and low, and have only come up with 2 options -
Open Colleges: basically a learn it yourself at home course. not worth a penny at all. not cheap either.
TAFE - If i remember correctly it is a 4 year course. The first being fully theoretical in nature, the second being practial and theoretical, and from then on though an apprenticeship with a marine outlet? Looked up the details a while back and sort of gave up as it was too much of a run around.
would be happy to pay a professional a decent amount of $$ for proper lessons, but definitely dont want to commit to an apprenticeship.