The next supply chain bottleneck is productivity, not capacity

The Shift This Week

This week’s Signal Radar points to a widening gap between freight rates and supply chain risk.

Container rates fell as carriers added capacity and bookings slowed. Congestion also eased on some intra-Asia routes, while DHL added new freighter services between Asia and the US Midwest. Shippers now have more room to challenge high rates and remove premiums agreed during earlier disruption.

But cheaper freight did not mean goods were moving freely.

Low water levels on the Rhine restricted vessel loads and reduced the flow of raw materials into German industry. Attacks in the Black Sea cut Ukraine’s grain-export capacity. Tankers and LNG carriers faced delays around the Strait of Hormuz. Antwerp temporarily lost container throughput after a hazardous-material leak.

These events affected different products and routes, but they point to the same problem. Capacity may be easier to source while individual supply chains remain exposed to blocked routes, limited vessel space and disrupted ports.

Lower transport costs do not necessarily mean it is easier to move critical goods. Freight prices have fallen faster than many of the constraints that determine whether goods arrive.”

The Bigger Pattern

Recent weeks suggest that the main constraint is shifting from rates to reliability.

More capacity has entered some freight markets, helping rates and congestion to fall. But elsewhere, existing capacity is producing less. Barges carry smaller loads when river levels fall. Tankers complete fewer voyages when they wait outside a restricted route. Ports move no cargo while terminals are closed. Aircraft remain on the ground when engines cannot be maintained.

This distinction matters because capacity can look available without being fully usable.

A ship still counts as part of the fleet while it waits at sea. A barge still operates while carrying only a fraction of its normal load. An aircraft still belongs to an airline while it waits for repair. In each case, the asset exists, but delivers less.

Supply chains are therefore becoming more dependent on the productivity of routes, terminals and equipment, not simply on how much nominal capacity the market contains.

Lower freight rates can improve purchasing terms. They cannot compensate for a port that cannot load cargo, a vessel that cannot sail full, or an aircraft that cannot fly.

What Changed

Freight buyers gained more bargaining power

Main east–west container spot rates fell for the first time since late April as carriers added capacity and bookings cooled. Intra-Asia rates and waiting times also eased after the early peak period.

DHL added Boeing 777 freighter services from Thailand, Vietnam and Taiwan to Chicago and Cincinnati. This increased airfreight capacity on selected Asia–US routes.

These changes give shippers more scope to secure lower spot prices, challenge disruption surcharges or even reopen tenders.

The improvement was not equal across the market. Demand for airfreight linked to AI equipment strengthened while ecommerce volumes softened. Capacity and pricing may therefore continue to vary by route and cargo type.

Transport problems reduced the amount of goods available

Low water on the Rhine meant some vessels could carry only about one-fifth of their normal load. Less raw material reached German factories, and Thyssenkrupp reduced blast-furnace production.

In the Black Sea, attacks restricted shipping and sharply reduced grain intake at Chornomorsk. Ukraine’s farmers’ union estimated that about one-third of the country’s Black Sea grain-export capacity had been lost. European wheat prices rose as traders expected less grain to reach the market.

Antwerp also stopped some container operations after a hazardous-material leak.

These events did more than delay deliveries. They reduced the amount of raw material, grain and container cargo that could be moved.

Hormuz slowed energy shipments without closing

Few tankers entered the Strait of Hormuz to load oil during the period. LNG crossings stopped for part of the week, while loaded LNG carriers waited at sea.

The route did not need to close to cause disruption. A vessel that spends extra days waiting delivers later and cannot begin its next voyage. The same fleet then carries fewer cargoes.

A proposed US charge of 20% on cargo passing through Hormuz added another possible cost. It also left an open question over whether carriers, cargo owners or buyers would pay it.

Aircraft and engine capacity remained tight

Airbus and Boeing chartered Antonov An-124 aircraft to move urgent A350 and 767 structures. Using specialist heavy-lift aircraft suggests that normal transport arrangements and available stocks were not enough to protect assembly schedules.

GE Aerospace also reported that engine-overhaul facilities remained heavily oversubscribed. Airlines are keeping older aircraft in service because new aircraft and replacement engines remain difficult to obtain.

Aircraft availability is therefore being limited by both production delays and a shortage of maintenance capacity.

Strong volumes did not prove stronger demand

The Port of Los Angeles handled more than one million TEU in June as importers brought cargo forward ahead of possible tariff and fuel-cost changes.

Stellantis reported higher vehicle shipments, while Volvo recorded a 122% rise in North American truck orders. Yet current truck sales remained weak, retail demand was uneven and ocean bookings later cooled.

These figures describe different stages of the sales cycle. Port volumes show goods already moving. Shipments reflect earlier orders. Truck orders show planned future purchases. None alone shows that final demand is recovering.

Why It Matters

The main mistake would be to treat lower freight rates as proof that supply chain risk has fallen.

Lower rates create a clear procurement opportunity. Shippers may be able to renegotiate contracts, remove old disruption surcharges or use the spot market more selectively.

But low rates do not guarantee that a shipment will arrive when it is needed. A delayed delivery can still increase inventory costs, stop production, trigger emergency transport or cause a missed customer order.

The same distinction applies to backup plans. A route is not a real alternative simply because it appears on a map. It needs available carriers, terminal capacity, inland transport and enough time to qualify new providers. When disruption pushes several companies towards the same alternative, that spare capacity can disappear quickly.

Demand planning also needs more care. Imports brought forward from future months can make current volumes look strong. Backlog clearance can lift shipments even when new orders are weak. Treating either as lasting growth can leave a company with too much stock, transport capacity or production.

The practical response is selective.

Use lower freight rates where service has also improved. Keep protection where a specific route, supplier, port or asset remains hard to replace. Cost and risk are moving in different directions, so they should not be managed as though they are the same measure.

Signal Strength

Several different types of evidence support this week’s argument.

Freight rates, bookings and congestion show that transport has become cheaper and more available on some routes. At the same time, the Rhine, Black Sea, Hormuz, Antwerp and aerospace signals show that important goods and assets remain difficult to move or maintain.

The evidence is strongest on the gap between lower freight prices and lower supply chain risk.

Demand is less clear. Front-loaded imports, backlog shipments, new orders and final sales are still giving different signals.

Questions To Ask This Week

Logistics

• Which lanes have become more reliable as well as cheaper?
• Which backup routes have confirmed carrier, terminal and inland capacity?
• Where would one port, river or security incident stop the flow of goods?

Procurement

• Which freight premiums can be removed without giving up reserved capacity?
• Which materials would become scarce if transport capacity fell next week?
• Which alternative suppliers are qualified and able to deliver now?

Planning & Inventory

• Which forecasts include imports brought forward from future months?
• Which stock buffers still protect against a known supply risk?
• What evidence would justify reducing those buffers?

Commercial

• Which customer promises depend on one route, supplier or asset?
• Are delivery commitments based on capacity that has been confirmed?
• Which customers would be affected first by a delay?

Finance

• How much cash is tied up in delayed cargo or precautionary stock?
• Which contracts expose the company to demurrage, surcharges or new transit fees?
• Would the saving from a lower freight rate cover the cost of a service failure?

Operations

• Which production line would slow first if inbound deliveries fell?
• Which assets depend on scarce repair slots, engines or specialist parts?
• Which emergency services are reserved by contract rather than assumed to be available?

What We’re Watching Next

The next question is whether lower freight rates are followed by better service.

The case for a broader improvement would strengthen if schedule reliability rises, waiting times continue to fall and carriers keep capacity in the market.

It would weaken if carriers respond to lower rates by blanking sailings or removing ships.

A second test is whether transport problems cause more production cuts, shortages or price rises. Further factory slowdowns, rising commodity prices or congestion on diversion routes would show that the effects are spreading beyond transport.

Demand also needs to become clearer. Strong new orders, retail sales and restocking after front-loading fades would point to genuine growth. Falling bookings alongside rising inventories would suggest that recent volumes mainly shifted demand from future months.

For now, lower freight prices are useful. They are not evidence that supply chains have become safer.