That's one of the main routes for our fuel,
""Our crude oil supplies come from the nearby country of Malaysia (about 27%), from Australia (about 22%) and the rest come from a wide range of places around the world. Some of those places are very close to Australia – Indonesia (7%), New Zealand (5%) and Papua New Guinea (5%) particularly.
About 40% of our refined fuel products originate from Australian-refined crude oil. It follows that the rest of our refined oil products are refined overseas. We get 27% of our imported refined products from Korea, 26% from Singapore, 15% from Japan, 10% from Malaysia, 9% from China and the remainder from the rest of the world. Those refineries overseas get their own crude from a wide range of places.""
https://www.shippingaustralia.com.au/su ... resilient/We need to be able to bring some hurt to anyone trying to mess with that, from a looooong way away.