Panamax boxships face obsolescence by 2030 as 18,000-teu orderbook swells

Traditional panamax and post-panamax containerships could be commercially obsolete by 2030, according to Braemar analyst Jonathan Roach, as an orderbook dominated by vessels of at least 18,000 teu triggers a cascade of tonnage into trades historically served by smaller ships.

The numbers behind the warning are stark. Braemar counts 428 vessels in the 4,000–7,499 teu segment aged 20 years or older, against just 283 ships on order in that size range. The orderbook is pointed the other way: 291 ships of 18,000 teu and above, representing 6.06m teu of capacity, are on contract at yards worldwide.

"The ageing fleet is concentrated in the sub-panamax segment, while the orderbook is heavily skewed towards larger ships," Roach told The Loadstar. He warned that panamax and post-panamax tonnage faces being squeezed out, "potentially becoming obsolete by 2030."

What does the delivery schedule look like?

Sea-Intelligence forecasts average quarterly deliveries of 1m teu between 2027 and 2030 — substantially above recent historical levels. That volume lands on the water whether or not demand keeps pace.

Alphaliner's fleet data shows the imbalance runs through every size band below the mega-ship tier. Some 526 vessels of less than 1,000 teu are at least 20 years old, compared with just 67 ships of that size on order. In the 1,500–1,999 teu band, the picture flips: 248 ships on order against 196 elderly vessels.

That gap is deliberate. Alphaliner analyst Mael Pape-Leostic told The Loadstar orders for vessels under 6,000 teu have risen significantly since mid-2025, largely to replace ageing tonnage. But he added: "In our view, this renewal will not be on a like-for-like basis." Carriers running ships below 1,000 teu today could replace them with units of 1,200 teu or even 1,800 teu.

The arithmetic matters for shippers. Replacing old vessels with larger ones grows global carrying capacity without adding to vessel counts — meaning effective fleet capacity expands even during a "replacement" cycle.

How bad will the charter downturn get?

Roach expects charter earnings peaked this year, with 2027 marking the start of a downturn. "Pressure should become more pronounced in 2028, before the market bottoms out in 2029," he said.

"This is not simply a story of fleet growth. It is a story of fleet displacement," Roach said. "The influx of larger newbuildings will trigger further cascading, pushing bigger ships into trades currently served by smaller vessels. Larger ships cannot serve every trade, so investment in smaller vessels will continue. But the direction of travel is clear — the global fleet is getting bigger, while parts of the existing mid-sized fleet risk being left behind."

Not everyone expects a collapse. Peter Sand, chief analyst at Xeneta, said charter earnings will come under pressure but he does not anticipate a market bust, arguing tonnage providers have become more disciplined in recent years. He noted chartered tonnage represents roughly half of carriers' operational capacity — a concentration that gives owners leverage to resist rate capitulation.

Can demand absorb the tonnage?

Jan Tiedemann, VP of liner strategy at Alphaliner, pointed to counterweights: longer trade routes, slow-steaming and growing consumption in emerging markets could soak up some of the incoming capacity. Higher bunker and emissions costs, port constraints and trade imbalances also raise tonnage requirements per unit of cargo moved.

For carriers, the calculus favours upsizing on every renewal decision. For non-operating owners holding 20-year-old panamaxes, the window to trade out at sensible values narrows with each quarterly delivery. And for shippers on mid-size trades, the likely outcome is bigger ships calling, reshaped port pairs and renewed downward pressure on unit costs — a dynamic that will define charter and freight markets through the 2029 trough Braemar projects.