Tauranga: Deeper Access, Faster Handling and a Berth Constraint

The channel and berth programme

Port of Tauranga is deepening its shipping channel for vessels drawing up to 15.5 metres while continuing to operate with little spare container-berth capacity. Chief executive Leonard Sampson's 29 October annual-meeting speech explains the immediate purpose of the current dredging: allow the largest ships already calling at the port to transit at both low and high tide. The additional flexibility arrives ahead of the Stella Passage berth expansion. ^[1]

The port has also raised its handling rate. Its average ship rate reached 76.4 container moves per hour in the 2026 financial year, compared with 67.2 a year earlier. On-time container-ship arrivals increased from 62% to 71%. Yet Sampson said the shortage of spare berth capacity still made recovery from supply-chain and schedule disruption difficult. ^[1]

These are three different sources of operating flexibility: the hours in which a ship can pass through the channel, the time its cargo occupies a berth, and the available quay frontage when schedules slip. Each investment needs to be judged against the part of the vessel call that it can improve.

Put the handling gain into berth hours

For an illustrative 1,000-move exchange, dividing moves by the two reported average ship rates gives 14.88 handling hours at 67.2 moves per hour and 13.09 at 76.4. The difference is about 1.79 hours, or 12.0% of the earlier handling time. These are IMWO calculations at constant exchange size and average rates; the source figures describe annual operating performance. ^[1]

A port can use that reduction to shorten cargo-working occupancy. Its ability to recover a late vessel also depends on when the next ship needs the berth and when the departing ship can transit the channel. Channel deepening can widen the transit window for a qualifying ship, while a higher ship rate can bring its cargo exchange forward. The combined benefit depends on both constraints being active in that call.

Berth planning should therefore track arrival deviation, cargo-working hours and the next available transit window together. The additional channel access can be valued through calls that currently wait for a suitable tide; the handling improvement can be valued through the occupied hours it releases. New quay frontage supplies a further scheduling option when vessels arrive close together.

Stella Passage and the terminal-equipment programme

The Stella Passage approval covers a 385-metre extension to the Sulphur Point container berth in two stages and 315 metres at Mount Maunganui, together with reclamation and dredging. On 13 October the port reported three appeals and two judicial-review applications against the 7 September fast-track decision. It intended to seek an urgent, combined hearing. ^[2]

Chair Julia Hoare's same-day speech confirms that the second stage of capital dredging is under way, with completion expected around mid-2027. It also describes preparations for two blocks of nine electric automated stacking cranes, intended to coincide with the new container berth. Emulation is complete; process refinement, system design, operational readiness and vendor contracting continue. ^[5]

The current capital dredging improves access while the port waits for additional berth capacity. The stacking-crane programme adds a further readiness requirement at the terminal. Keeping those work packages visible allows an upcoming marine milestone to be assessed against the vessel calls and terminal operations it will actually serve.

The port completed a NZ$57 million sale of its Rolleston property on 28 October as part of its capital-recycling programme. The announcement directs the capital towards strategic infrastructure projects that support the port's long-term growth. ^[3]

Lower quarterly volume leaves the scheduling question open

For the three months to 30 September, total trade fell 4.8% to 6.25 million tonnes and container volume fell 2.6% to 311,000 TEUs. The port attributed much of the total decline to log exports affected by high fuel prices. Its same-day trading statement retained the warning about limited spare container-berth capacity. ^[4]

Quarterly volumes measure the amount handled across a period. Vessel scheduling has to accommodate the exchanges and arrivals within that period. For the marine works programme, the performance test is the number and timing of calls released from a tide constraint, the cargo-working hours saved and the recovery capacity available during a disrupted week. Those measures connect the dredging, terminal operations and berth expansion to the operating problem each is intended to solve.