2 schools in Sydney, Australia run RYA Powerboat/Tender Training Courses. Compare them here, then book direct with the school. YachtSync lists every provider free and ranks none of them by any commercial arrangement.
Schools
RYA Powerboat/Tender Training Courses in Sydney
Superyacht Crew Academy (Sydney Maritime Institute)
Listings are informational. YachtSync is an independent directory and is not affiliated with these schools unless explicitly stated. Details change; confirm direct before booking.