Container shipping is heading into a period of excess capacity, with ING's research desk warning that fleet growth is set to outrun cargo demand and pressure freight rates across the main east-west trades.

The Dutch bank's analysis, published on its ING Think platform, frames the industry's central problem in blunt terms: too many ships chasing too few boxes. For shippers, that imbalance historically translates into softer contract rates and stronger negotiating leverage — but ING stresses the outlook is clouded by unusual uncertainty, and every promised relief comes with a caveat.

What is driving the overcapacity?

The core mechanic is simple. Carriers ordered large numbers of newbuildings during the pandemic-era profit boom, and those vessels are now delivering into a demand environment that has cooled from its 2021–2022 peak. The result, per ING, is a widening gap between available slot capacity and actual container volumes moving on the water.

Redeliveries compound the problem. Tonnage absorbed during the Red Sea diversions — when lines stretched services around the Cape of Good Hope and effectively soaked up surplus capacity — is returning as normality resumes. What crisis once hid, normalization now exposes.

ING does not offer a single headline number for the supply-demand gap in the piece, and that absence is itself telling: the bank is careful to frame its overcapacity call as directional rather than precisely quantified. Readers should treat any specific fleet-growth-versus-demand figure from other sources with the same caution.

What does it mean for rates and shippers?

The commercial logic runs one way. When capacity growth exceeds demand growth, spot rates tend to slide and carriers fight to defend market share through blank sailings, slow steaming and capacity management. Shippers gain breathing room in annual contract talks after years of sky-high pandemic pricing.

But ING flags the uncertainty on the demand side. Geopolitical shocks, tariff policy shifts and unpredictable consumer demand in Europe and North America could either deepen the glut or, if a new disruption closes a key waterway, temporarily soak it up again. The Red Sea showed how quickly a surplus fleet can become a shortage. A rerun of that dynamic cannot be ruled out.

For carriers, the implication is margin compression after an extraordinary earnings cycle. For forwarders, softer spot markets compress buy-sell spreads unless volumes grow. For shippers, the window favors locking in longer contract coverage while the balance of power tilts their way — with the standing caveat that a single geopolitical event can reverse it.

What is not said?

The analysis is notably restrained on orderbook cancellation. Scrapping is the other classic lever, and ING points to it as the industry's standard response to overcapacity; whether demolition volumes will be sufficient to rebalance the market is the question the piece leaves open. Lines have rarely scrapped aggressively while ships remain profitable, and older tonnage has already proven it can earn its keep during disruption.

Consolidation and alliance restructuring offer a further cushion, but these are slow levers against fast-delivering shipyards. The gap between what carriers can control and what the market will do to them remains the industry's defining exposure.

The trajectory, on ING's reading, points to a market where capacity pressure dominates unless demand surprises to the upside or a fresh disruption absorbs tonnage — conditions that would keep rate volatility, not stability, as the baseline for planning.