The case for Westport, answered point by point

This campaign is not opposed to Western Australia having a working container port, and it is not opposed to AUKUS. Both are worth stating plainly before answering anything. What follows from that is narrower than either, and it is two things: where the terminal goes, and whether the freight case used to justify putting it there holds up.

1. Claim 1

   “Fremantle Port is projected to reach capacity in the late 2030s, and WA's container trade will rise to 2.3 million TEU per year by 2060, while Fremantle's capacity peaks at around 1.4 million TEU.”

   The capacity case rests on a forecast, and the forecast is disputed

   Two separate things are being claimed here. One is that Western Australia will eventually need more container capacity than Fremantle can provide. This campaign does not argue with that in principle. The other is that the ceiling arrives on a particular date, at a particular volume, because trade grows at a particular rate. That is a forecast, and the sponsor disputes it.

   Fremantle recorded a little over 850,000 TEU in 2024. The capacity ceiling quoted for it is around 1.4 million. Getting to 2.3 million by 2060 requires growth to run at the projected rate for thirty five years, and the record of freight forecasting in this state does not support treating that as settled.

   Even taken at face value, the capacity argument answers a question nobody is asking. It says Western Australia needs more container capacity. It says nothing about whether the replacement has to be six kilometres across the water from the base where United States nuclear submarines will be berthed, in a sound with one narrow entrance, on the far side of the route those submarines take to their own maintenance facility.

2. Claim 2

   “Projected shipping data for 2040 anticipates minimal change in the total number of ships, but an increase to 1.3 to 1.4 million TEU carried by larger container ships.”

   The growth is assumed to arrive on bigger hulls, and that is an assumption

   The projection does not say more ships. It says roughly the same number of ships carrying substantially more cargo each, because the vessels calling will be substantially larger. Everything downstream of that, including the berth design, the channel depth, and the case for the site, inherits it.

   Larger container ships calling at Kwinana is a forecast about the world's fleet and about the trade lanes serving Western Australia, not an observation about them. It deserves the same scrutiny as the growth rate itself, and it has not had it in public.

   Note what this does not change. The movements through Cockburn Sound still more than double, because ships that berth at Fremantle today would berth at Kwinana instead. Traffic in the state stays flat while traffic past the submarine base rises sharply. Those two facts are not in tension: they are the whole reason siting is the question.

3. Claim 3

   “Westport is planning to move container trade from Fremantle to Kwinana in the late 2030s, and the transition will be a single step once Fremantle reaches capacity around 2038.”

   A late 2030s date is an argument for deciding now, not later

   The timeline is sometimes offered as reassurance: the move is more than a decade out, so there is time. It cuts the other way. By the time the port opens, the base will have been operating with American boats for years.

   The moment to ask whether an automated container terminal belongs in that water is while the design can still change.

   TodayLater

   The window in which the design can still change

   Around 2038

   Open today. Every marine infrastructure, dredging, breakwater and rail contract that is let narrows the range of options still available later.

   United States submarines at HMAS Stirling

   Submarine Rotational Force West arrives well before the container terminal does, and does not leave when it opens.

   The automated container terminal at Kwinana

   In design and contracting now, opening once Fremantle reaches capacity, around 2038. Dashed until it is built.

   Ordering, not a time scale. The only published date here is the late 2030s transition, once Fremantle reaches capacity around 2038, and it is the only edge marked. Nothing sets a date on when the submarines arrive or on when the design stops being changeable, so neither bar is drawn to one, and no distance in this figure is a measurement of time. Figures from the Westport program and the August 2025 assessment, sourced on the Evidence page.

4. Claim 4

   “The Kwinana Industrial Area offers over ten times more land to support the next 100 years of growth, and moving the port improves road and rail freight connections in the southern metropolitan region.”

   The land case is about the shore, and the risk is in the water

   Everything in this argument concerns what happens on land: available industrial acreage, truck movements, rail corridors, and the residential streets freight currently passes through. All of it may well be correct.

   None of it addresses the maritime question. The published security assessment is about vessel movements through a single confined channel shared with submarines, about commercial traffic crossing the route those submarines take between HMAS Stirling and their maintenance facility, about how much visibility Australia has into foreign-flagged shipping entering that channel, and about what happens if the channel is blocked. A better freight corridor on the eastern shore does not change any of those.

5. Claim 5

   “The Western Australian Premier dismissed the security concerns raised about the Westport project and its proximity to an AUKUS base, saying the member who raised them was wrong.”

   A dismissal is not a risk assessment

   The two retired officers who reviewed the claims describe this response as opportunistic ignorance, and their reason is specific rather than rhetorical: the dismissal was not accompanied by any published analysis.

   Saying a concern is wrong is not the same as showing it has been assessed. The public record still does not contain a risk assessment of the Westport relocation conducted after AUKUS existed, a threat assessment on weaponised merchant shipping near HMAS Stirling, or a plan for screening foreign-flagged vessels before they enter Cockburn Sound.

   If that work has been done, publishing it would end this campaign. That is a genuine offer, and it has been on the table since August 2025.

6. Claim 6

   “Defence has been consulted, and Westport's interface with HMAS Stirling has been discussed in the program's community communications.”

   Consultation happening is not the same as risk being assessed

   Consultation between a state infrastructure program and the federal defence department is necessary and welcome. It is not evidence that the specific risks in the published assessment have been evaluated, and it is not a substitute for saying so on the record.

   The assessment's authors make the point from experience rather than suspicion: security failures usually come from gaps in communication and coordination between agencies, not from negligence by any one of them. Two governments each assuming the other has done the analysis is exactly the shape that gap takes.

   The remedy they propose is straightforward. The responsible minister seeks formal assurance from defence leadership and from the relevant federal and state departments as to the depth and rigour of the risk assessments conducted since AUKUS was announced, and says publicly what that assurance found.