I found these tidbits of information in the US Army in WW2 Series,
The Technical Service, The Transportation Corps: Operations Overseas.
Port Operations
* Sydney, Brisbane, Townsville, and Cairns did not have a regularly assigned USA port organization, all port operations were conducted locally.
Ports
* Sydney - April 1942
- There were 177 ship berths of which 44 were connected to railways and included cranes. The port could accomodate 81 ocean going vessels at one time and 10-15 at anchor.
* Brisbane - 1942
- There were 50 marginal wharves with 28 berths, of which 14 were connected to railways. In March 1943, several cranes were added. Storage space was widely scattered and there was a constant danger of congestion at the port.
* Townsville
- This port was smaller than Brisbane and poorly equipped. No new piers were built during the war. There was an anchorage for 75 vessels from 2-6 miles off-shore. There were two piers for large ships and 6 berths connected to the railways. Cargo discharge was conducted by local longshoremen and was considered to be slow and inefficient. Townsville was considered a stop-over point and in Sept 43 had as many as 36 ships waiting to head to New Guinea.
* Cairns
- This port was used when Townsville exceeded its capacity. It had anchorage for 7 ocean-going vessels at one time.
Ship-related tidbits
- 61 American, British, and Dutch ships took refuge in Australia in late 1941-early 1942.
- When War Shipping Adminstration (WSA) ships moved into theater, they were often hijacked by theater commanders and used for theater operations.
- China Navigation Company (British) and Koninklijke Paketvaart Maatschappij (KPM - Royal Packet Navigation Co)(Dutch) were two companies that operated in this region.
http://www.timetableimages.com/maritime/index.htm
- Supplies to India were shared by ships whose origination ports were located in the Gulf of Mexico, Atlantic Ocean, and the Pacific Ocean.