Container Shipping Chokepoints: Why Panama, Bab el-Mandeb and Hormuz Now Price as a Single Risk

Three of the world's maritime pinch points tightened in the same trading week, and the freight market has stopped treating them as separate events. For anyone buying August space, the cost of that convergence is already legible in the spread between the two American coasts.

How Three Simultaneous Constraints Landed in One Trading Week

The Panama Canal Authority moved first. From 25 July it suspended the Period 3 auction for close-in transit slots covering regular and super Panamax vessels, and trimmed daily bookable capacity from 36 to 34 transits, as reported by Splash247 and the Maritime Executive. The stated driver is water: Gatun Lake is sitting at 84.6 feet against a five-year mark of 84.7 feet, with ACP planning against a 83.8 feet reading by late September.

Second came the southern Red Sea. Houthi forces declared an embargo on Saudi export traffic through the Bab el-Mandeb Strait, and gCaptain reported tankers and car carriers executing abrupt course reversals mid-passage. EU Operation Aspides has advised Saudi-, US- and Israeli-linked tonnage to stay clear and to minimise AIS transmission, which is a polite way of saying the strait is no longer a commercially navigable certainty.

Third, Hormuz. The US-Iran ceasefire has come apart, gCaptain counts 14 attacks on merchant shipping in the strait, and Lloyd's List reports bunker availability tightening globally as a direct consequence. Singapore VLSFO has run to $785 per tonne, up 24% on early last month, according to JOC.

Individually, each of these is a recognisable disruption with a known playbook. Together they remove every alternative routing at once. That is the part the market is only now pricing.

Why US East Coast Spot Rates Are Holding While the West Coast Slides

The Panama Slot Arithmetic Behind a $2,500-$3,000 Coast Spread

JOC reports that Asia-US West Coast slot space is easing as new capacity arrives, while the East Coast stays tight. The spread between the two now stands at $2,500 on the Shanghai Shipping Exchange index and $3,000 on the Platts assessment, against a traditional gap of roughly $1,000.

The differential between the two North American coasts is running at roughly three times its long-run level. Source: NauticX Visualisation.

The instinct is to read that as demand strength on the East Coast. It is not. It is a supply-side artefact of the fact that a carrier can drop an extra loader into a US West Coast string in a fortnight, but cannot conjure an additional Panama slot at any price once the auction window has been withdrawn.

Two transits a day out of 34 sounds trivial until it meets a fixed weekly rotation. Strings are built around a berth window at both ends, and a missed canal slot does not cost you a day, it costs you a rotation. The 0.5 foot draught reduction applied from 1 July compounds it, because a Neopanamax box ship that loses draught loses revenue tonnes, not a notional figure on a stability printout.

Water levels and queue lengths at the canal, with southbound waits running at roughly 1.7 times northbound. Source: NauticX Visualisation.

The usual escape valve is the Suez rotation. That valve is currently welded shut at the Bab el-Mandeb end, and the Cape alternative adds sea days at precisely the moment bunker prices are climbing. This is why the East Coast is behaving like a constrained product rather than a competitive one.

A missed canal slot does not cost you a day. It costs you a rotation.

The operational tell is Charleston. JOC notes an August terminal closure layered on top of the ACP restrictions, and the market response has been to attempt a $10,500 per FEU GRI into the East Coast from 1 August even though frontloading has largely run its course. Carriers do not push a general rate increase into a market they believe has spare capacity.

Bunker Cost Is Being Passed Through Faster Than Spot Rates Are Falling

The August surcharge round is broad and unusually quick. JOC reports CMA CGM applying an emergency fuel surcharge of $150 per TEU dry and $165 reefer on long-haul trades, with ONE at $75 and $100 respectively. MSC has folded a $289 per TEU global bunker charge into a full FAK increase on Asia-North Europe and Asia-Mediterranean.

Bunker prices and the surcharge instruments now being applied against them. Source: NauticX Visualisation.

Anyone reading softening transpacific spot numbers as relief on landed cost is reading the wrong line of the invoice. Spot is a negotiation; an emergency fuel surcharge is a contractual pass-through that lands on contract cargo which was, by definition, already sitting below the spot level. The net effect is a floor being installed under contract economics while the headline number drifts down.

Spot rates are a negotiation. Emergency fuel surcharges are an invoice.

The reefer differential is the honest signal in that table. Carriers price reefer above dry not because the fuel burn justifies the gap arithmetically, but because reefer cargo cannot wait for a cheaper sailing. Where you see the widest reefer premium, you are looking at where the carrier believes its pricing power is least contestable.

India is the clearest illustration of that logic running unchecked. The Loadstar reports CMA CGM levying a peak season surcharge of $5,000 per FEU to the US East Coast and Gulf and $1,500 per TEU to North Europe and the Mediterranean, MSC adding $500 per TEU congestion, and Maersk imposing a $2,000 per TEU overweight penalty on boxes above 22 tonnes out of JNPA, Mundra, Pipavav and Hazira. Container News separately records Maersk revising Oman and UAE emergency contingency surcharges to a $2,800-$7,700 per TEU band from 1 August.

The Supply Side Is Amplifying the Shock Rather Than Absorbing It

Alphaliner data reported by Ship & Bunker puts 28 vessels of roughly 160,000 TEU in waiting or diversion because of the Middle East conflict, down some 55,000 TEU on the prior count. The idle fleet stands at 76 ships and 197,000 TEU, or 0.6% of global capacity. That is not a buffer.

Capacity leaving the market against capacity scheduled to arrive, on a logarithmic scale. Source: NauticX Visualisation.

The demolition market confirms it. ShippingWatch, citing Alphaliner, records 11 ships of 36,700 TEU sold for scrap in the first half, of which only five vessels totalling about 4,800 TEU were commercially motivated; the remainder were casualties and sanctioned tonnage. Owners are holding elderly ships because the spot market is paying them to.

So the fleet has no slack and is shedding nothing, while 9.0 million TEU of newbuilding capacity is scheduled for 2027 and 2028 delivery. The system is absorbing today's shock entirely through tonne-miles and waiting time rather than through vessel supply. That is a mechanism with no reserve capacity in it, which is precisely why a two-slot cut at a canal transmits into a $3,000 coast spread.

The Case for Reading This as a Peak-Season Squeeze Rather Than a Structural Reset

There is a credible opposite reading, and Yang Ming's chairman Tsai Feng-ming articulated it this week. Speaking at a Maritime Day event and quoted by the Loadstar, he described himself as cautiously optimistic on July and August given the conventional third-quarter peak, and pointed out that Asia-US West Coast spot has slipped precisely because carriers have injected extra loaders freely.

That matters. It demonstrates the fleet can still respond quickly wherever a canal is not in the way, which limits how far any single chokepoint can reprice the whole market. Dr Tsai also framed the decisive variable as US tariff policy rather than geography, arguing that a settled Section 301 rate around 12% would leave Christmas peak volumes largely intact.

The canal case can be read down too. Two slots is roughly a 6% reduction, Gatun is only 0.1 feet below its five-year mark, and the ACP retains double-locking and water-saving basins learned in the 2023-24 drought. Northbound waits at 2.4 days are unremarkable by historical standards.

And the demand foundation is genuinely soft underneath. Frontloading ahead of tariff changes has pulled volume forward, which borrows from the fourth quarter, and the heightened CBP inspection regime that JOC describes is a demurrage and cost-of-compliance problem rather than an ocean capacity one. If tariffs settle benignly and El Nino underdelivers, this squeeze unwinds by October.

What Shippers and Carriers Should Settle Before the August Rate Round

Secure Period 1 and Period 2 canal bookings now and stop treating close-in slots as a fallback. With Period 3 auctions suspended, the schedule-flexible cargo that used to arbitrage the last 48 hours has nowhere to go, and that competition will migrate into the 21-day and 365-day windows over the next fortnight.

Model the surcharge stack separately from the base rate in every August contract review. A $150-$289 per TEU fuel component and a $1,000 per container North Europe-US peak surcharge from 19 August, as reported by Container News, will not appear in any spot index you are benchmarking against.

Reprice the US East Coast all-water option against West Coast plus intermodal on landed cost, not headline freight. US intermodal rail volumes rose 7.2% year on year in the week to 18 July on Association of American Railroads data reported by FreightWaves, which is capacity you can actually book.

Then watch three markers into the autumn: the final Section 301 tariff determination, the Gatun reading against that 83.8 feet late-September projection, and whether Bab el-Mandeb transit counts stabilise or fall further. Two of the three resolving benignly unwinds most of this. All three holding takes the East Coast well through the $10,500 mark.