Hi Xige
Shipping schedules in 2025 show a barge arriving at Saibai around once every 7 days as part of the weekly circuit. This allows for inbound and outbound transportation of goods and services.
QLD Vessels & Freight Receivals
Have a look at this photo – you can make some assumptions on the amount of cargo containers that can be transported in the weekly run to Saibai
https://tsirc.qld.gov.au/news-events/news/tsirc-and-sea-swift-media-release/