The Malacca Strait is used by most container and vehicle ships coming to Australia from Europe. It’s the main route for shipping from the Indian Ocean trading with Asia. It carries about 80,000 ships a year. Once ships from Australia reach North Asia or pass through the Indonesian archipelago, they enter the busiest shipping lanes in the world. The ships carrying Australia’s bulk commodity exports are a significant presence: it’s estimated they account for 29% of global bulk shipping, however the 8 million containers handled each year at Australia’s ports are less than 1% of the global total. So, absolutely disastrous for Australian trade while leaving the rest of the world largely unaffected.