The Panama Canal Is Running on a Booking System. Is Your Freight Booked?

Between September 4 and 24, USDA inspectors cleared 24 China-bound vessels carrying roughly 1.6 million metric tons of soybeans for export from Mississippi Gulf terminals. All of them were headed the long way, around Africa's Cape of Good Hope, because transit at the Panama Canal was restricted [6]. Over the same three weeks, six of the seven Gulf vessels bound for Japan were slated for the Canal [6].

Same ports, same crop, same month. USDA attributes the China routing to restricted transit at the Canal, and notes that Gulf-to-Japan traffic relied more on it [6].

That is the whole lesson of this brief. The Canal is open, and it is getting better. But in 2026 it runs on reservations and water, and freight that cannot get a reservation takes a longer, costlier road.

What Changed This Fall

On September 28, 2026, the Panama Canal Authority added a tenth daily slot at the Neopanamax locks for booking dates beginning October 15, raising total daily capacity to 33 transit slots across the Neopanamax and Panamax locks [2]. It also set the maximum authorized draft for Neopanamax vessels at 14.94 m (49.0 feet), effective immediately and until further notice [1].

That is good news, with a caveat in the same announcement: "While the water deficit continues in the Canal watershed, the Transit Reservation (Booking) System remains the only way to guarantee a transit date. Vessels without a reservation may therefore face indefinite delays" [1].

For context, the Authority's own figures put the normal transit capacity of the Panamax locks at 34-36 vessels per day and the Neopanamax locks at 9-11, with a maximum sustainable capacity of approximately 36-38 vessels per day for the Canal as a whole [3]. USDA's October 1, 2026 Grain Transportation Report said the Canal was "currently" allowing just 32 transits per day, down from its normal capacity of 36-40 [6]; USDA's 36-40 range differs from the Authority's 36-38. Thirty-three is better. It is not normal.

The Slots Are Already Spoken For

September's operations summary shows how tight the system is. Oceangoing transits averaged 32.63 a day [3]. In the Neopanamax locks, booked transits used 134 slots against 125 available, a rate of 107.20 percent; Supers used 98.39 percent of their slots and regular vessels 95.83 percent [3]. The Authority notes that the available figures exclude additional auctioned slots [3].

All vessels are required to hold a reservation before transiting. For those that did not book ahead, the Canal offers last-minute reservations and an auction, with three to five slots auctioned each day [8]. The Authority's finance chief said in April that some vessels have paid over one million dollars at auction, while describing those figures as reflecting temporary conditions driven by heightened demand [8].

You will probably never see a canal auction line on an invoice. USDA reports that slot restrictions translated to higher costs of obtaining transit slots, lighter cargo loads and more ton-miles, which pushed up ocean freight rates [7].

Why a US Plant Should Care

This is a US lane more than a Panamanian one. The Authority reports that approximately 69.9% of the Canal's cargo has its origin or destination in the United States, mainly ports on the East Coast and the Gulf of Mexico, with containers, grain and energy products as the main goods [4]. The Congressional Research Service adds that about 40% of all US container traffic, with an estimated value of $270 billion, reportedly travels through the Canal annually [5].

If you import from Asia into a Gulf or East Coast port, or export bulk out of the Gulf, our read is that some of your freight probably depends on this waterway whether your forwarder mentions it or not.

The costs show up in plain numbers. USDA's October 15 report says the Authority, anticipating reduced rainfall through October, instituted draft restrictions and reduced transit slots, and that these actions translated to lighter cargo loads per shipment, higher costs of obtaining transit slots and, in many cases, more ton-miles as vessels rerouted around the southern tip of Africa [7]. For the week ending October 8, the rate to ship 1 mt of grain from the US Gulf to Japan was $76.25, 36 percent more than the same week in 2025 [7].

The Risk Is Weather, and USDA Is Already Watching It

USDA notes that bookings remained scarce in September because of draft restrictions and slot reductions ahead of anticipated El Niño weather events [7]. It also warns that if El Niño-related conditions further restrict transits and more vessels reroute around Africa, ton-miles could keep rising and push rates up [7].

In our view, that is the useful part: the restriction is tied to weather that USDA is already flagging in advance [7]. The Authority publishes its draft limits, slot counts and monthly operations summaries [1] [3]. The signal is public. In our view, the work is connecting it to your own lanes before the next advisory, not after.

What to Do This Quarter

The steps below are Foley Strategic Advisory's recommended approach; the sourced facts behind them are cited above.

1. Find out which of your lanes cross Panama

Ask each ocean forwarder and carrier for routing on your top Asia-to-Gulf and Asia-to-East Coast lanes, plus any Gulf export lanes. Mark each one Panama, Suez, Cape, or US West Coast plus rail. In our view, many teams know their ports better than their canal.

2. Put the Canal's advisories on someone's weekly list

Have one person check the Authority's advisories to shipping and monthly operations summary each week, looking for changes in draft limits and daily slots [1] [3]. A draft or slot cut is the early warning. Treat it the way you would treat a supplier's allocation notice.

3. Ask your forwarder how your freight gets a slot

The Canal says a reservation is the only way to guarantee a transit date [1]. Ask whether your carriers' services hold booked or long-term slots, and what happens to your containers if a sailing goes to auction or reroutes. Get the answer in writing.

4. Price the long way around before you need it

For your top three Panama-dependent lanes, get a quote and a transit time for the alternative: US West Coast with rail, or the Cape route. Add the extra days to your safety stock math for the parts that ride those lanes. If the Canal tightens again, you will be choosing from a plan instead of from a crisis.

5. Watch the weather the Canal watches

USDA ties the risk of further restriction to El Niño-related conditions [7]. Add the seasonal outlook to your quarterly S&OP risk review for any category that crosses Panama, and set a trigger for when you shift orders earlier.

The Boring Version

The goal is not to predict rainfall in Panama. It is to know which of your shipments depend on it, who is watching the advisories, and what you will do on the day the slot count drops. Boring, written down, and ready.