Panama Canal Lifts Daily Transits to 34 as Neopanamax Draft Returns to 15.24m

The Analysis

The Panama Canal Authority put out a notice this week and the trade wires picked up the round number, which is that daily transits go from thirty-three to thirty-four starting the twelfth of November. What the wires mostly left alone is the second half of the same sentence, which is that the maximum draft for the neopanamax locks is restored to fifteen point two four metres. Two numbers, one notice, and almost nobody is treating them as a single event. They are a single event. They are two scales on the same dial, and the dial is the level of Gatun Lake.

I spent part of the week looking at this as a capacity problem rather than a scheduling one, because that is what restores the notice's real meaning. A canal does not have a capacity in the way a terminal has a throughput figure. A canal has a capacity that is a function of water, and the water determines both how many ships pass and how deep they can sit while doing it. The ACP just turned the dial up one notch on both scales at once, and the honest question for anyone routing through Panama is not whether transits went to thirty-four. It is how much of the recovery is already priced into the slots you can actually book.

One more thing before the arithmetic, because this is the part that gets buried. The extra slot is not spread evenly across the booking categories. It goes to the Super category, which brings the daily allocation to ten neopanamax, nineteen Super and five regular. That composition is not a footnote. It tells you which class of vessel the authority is choosing to let back in first, and it tells you where the bidding pressure will land.

Start with the switch itself, because the whole story is one mechanism with two readouts. Gatun Lake feeds the locks. The lock chambers lift a ship roughly twenty-six metres from the Pacific to the lake level and lower it again on the Atlantic side, and every lockage spills a large volume of fresh water to the sea. When the lake is high after rain, the authority can afford more lockages per day and a deeper maximum draft, because it has water to spare for both. When the lake is low, as it was through the El Nino drought, both scales fall together. Transits were cut from thirty-six down to thirty-two at the bottom, and the draft ceiling was lowered at the same time, because those are not two separate decisions. They are one decision expressed twice.

Read the two scales as one, and the notice becomes legible. Thirty-six to thirty-two was a cut of about eleven per cent in daily transits, and it came with a draft restriction that forced some neopanamax ships to sail light, leaving revenue cargo behind or diverting to a smaller class of vessel. Now the authority is going back up, but only by one, from thirty-three to thirty-four. On the transit scale, this is a movement of about three per cent. On the draft scale, the neopanamax ceiling going back to fifteen point two four metres is a full restoration of the old maximum.

So the two scales are not recovering at the same rate. The transit count is inching; the draft has snapped back. A shipper who reads only the transit headline would say the canal is barely improving. A shipper who reads the draft line would say the deep ships are back. Both are looking at the same notice, and the honest answer is that the draft recovered faster than the slot count did, which is exactly what you would expect if water is the binding constraint and the authority is managing it conservatively.

Put the scale of the canal on the table, because it is easy to lose. In the year to the thirtieth of September the canal logged nearly fourteen thousand transits and five hundred and twenty-one million tonnes, and it carries about five per cent of world seaborne trade. Run the division, and the average transit is carrying a little under thirty-seven thousand tonnes. That average matters because it tells you the canal is a bulk and container highway, not a niche shortcut, and it tells you that a change of one transit per day is a change of roughly thirty-seven thousand tonnes of throughput per day, or about thirteen and a half million tonnes a year. One slot, held for a year, is a meaningful corridor. That is why the composition of the extra slot matters as much as its existence.

Now the composition, because this is the detail the coverage skips and it is the one with money in it. The extra slot is allocated to the Super category, giving ten neopanamax, nineteen Super and five regular bookings. Super is the class between regular and neopanamax in the booking taxonomy, and the reason the authority chose to add the slot there rather than to the neopanamax quota is a statement about vessel mix. Adding to Super lets the canal take more of the mid-sized ships that fit the lock with the newly restored draft, without committing the same water budget that a larger neopanamax booking would.

In water terms, Super is the cheaper slot to give back. So the recovery is being staged to protect the lake, and the class that benefits first is the class that costs the lake least. That is prudent management, and it is also a signal to anyone waiting for the neopanamax quota to expand: the authority is rationing water, and it will expand the cheap slots before the expensive ones.

Here comes the part that changes how you should plan, and it is the piece the notice genuinely does not put in the headline. Not every slot in every category is allocated by reservation. A share of the transit capacity is allocated through booking auctions, where operators bid for slot priority, and when capacity is scarce the auction is where the real clearing price gets set. When the canal was cutting transits through the drought, auction prices for priority slots ran far above the normal reservation fee, and the only cargo that could justify the price was the cargo with a high value per container. Now that capacity is recovering by one slot, the question is which book that slot clears in, and the answer is usually the auction, not the standing allocation. So the practical consequence of the twelfth of November is not that everyone gets a slot more easily. It is that one more slot enters the market, and the slot goes to whoever can outbid for it.

Follow that through to the box level, with the assumptions written out. Take a container moving Asia to the US East Coast via Panama, and say its cargo is worth forty thousand dollars a container, a mid-range consumer electronics load. Take a second container, same route, same transit, carrying a commodity worth four thousand dollars. The slot auction does not care about the cargo; it cares about the bid. If the clearing bid for priority during the tight months ran into the thousands of dollars, the electronics load can absorb it as a fraction of cargo value, and the commodity load cannot, so the commodity takes the later slot and eats the schedule risk while the electronics takes the priority slot and eats the fee.

When capacity improves by one slot, the clearing bid softens a little, and the marginal winner of that softening is the cargo just below the old clearing threshold. If you are that cargo, the twelfth of November is good news. If you are well above the threshold, it is irrelevant to you. If you are well below, it is still irrelevant, because you were never bidding. The recovery is not uniform; it is sorted by cargo value per container, and it always was.

That gives the honest strategic read, which is that the canal rewards the shipper who plans for the auction and punishes the shipper who plans for the average. A shipper who builds a routing decision on the assumption that a slot is available at the standard fee will be wrong in any month the lake is low. A shipper who builds the routing decision on the question of whether their cargo value per container clears a realistic auction price will be right in most months. The variable to watch is not the daily transit count; it is the spread between the standing fee and the auction clearing price. When that spread is small, capacity is loose and you take the standard slot. When that spread is wide, capacity is tight and you either pay for priority or you route around. The twelfth of November moves the spread a little in your favour. It does not remove it.

There is a counterfactual worth naming, because it is what wallpapers the optimism. If the coming rainy season is generous and the lake rises well above the trigger level, the authority could restore both scales to their pre-drought maxima and the auction spread could collapse. Then the recovery is real and durable, and routing through Panama gets cheap. If the rains disappoint, or if the authority keeps the slot count conservative to protect the lake regardless, then the one-slot increase is a token and the draft restoration is the real story, because a deeper draft is worth more to a neopanamax operator than one extra slot is worth to anybody. The condition that flips the read is the lake level, not the transit count, and the lake level is not published in the headline. It is published in the authority's hydrological bulletins, and that is where a serious routing desk should be looking every week through the rainy season.

There is one more structural layer that nobody reports on canal notices, and it is the one that decides whether Panama matters to your routing at all. A canal is never chosen in isolation; it is chosen against the alternatives, and for Asia to US East Coast cargo the two live alternatives are the all-water Panama routing and the Suez routing with a longer ocean leg, plus the intermodal option of landing on the West Coast and moving by rail. When Panama cuts capacity, the marginal shipper swings to Suez or to intermodal, and when Panama restores capacity, the swing reverses. The size of that swing is set by the freight gap between the three, not by the canal's absolute capacity.

So the twelfth of November is not just a canal event; it is a nudge in the relative price of three routes that all compete for the same box. If the canal restoration pulls even a small share of Asia to US East Coast cargo back from Suez, it tightens Suez sailings and eases the pressure that had built up there through the tight months. The second-order effect is what a routing desk should be tracking, and it never makes it into the wire copy because the wire copy is about the canal, not about the competition between routes.

Now go one level deeper into why the authority is moving now, because the timing is not accidental and the reason matters to the read. Rainfall refills Gatun Lake on a seasonal cycle, and the authority manages the lake against a reserve for the dry season ahead. Adding a transit now, in the tail of the rainy season, costs less water reserve than adding one in the middle of the dry season, because the lake is replenishing rather than drawing down. So the authority can afford a cautious increase now, bank the confidence, and keep the option to hold the line if the rains fade.

That is why the movement is one slot and not three, and that is also why the composition of the slot went to the cheaper category. The whole notice is a conservative manager hedging a seasonal supply of water, and the correct reading of a conservative manager's small move is not that capacity is restored; it is that capacity is being tested. Plan for the test to hold, but keep the fallback.

The last structural observation, and the one I would hand to anyone setting next year's routing budget, is about the asymmetry of canal risk. The canal can cut quickly and restore slowly, because cutting is a water decision the authority makes alone and restoring is a water decision the lake makes. That asymmetry means the expected cost of routing through Panama is not symmetric around the average transit count; the downside tail is longer than the upside. A routing model that prices Panama at the average is underpricing the risk, because the bad months are deeper than the good months are high.

The honest way to price it is to weight the low-lake scenarios more heavily than their frequency alone would suggest, and to hold a fallback route that you have already qualified and priced, so that when the next cut comes you are not scrambling for a booking on a Suez string at the worst possible moment. The twelfth of November is a good month. It is precisely in the good months that you build the fallback for the bad ones.

Bring it back to the operating decision. If you have a neopanamax string through Panama and you were restricting load because of the draft ceiling, the restoration to fifteen point two four metres is worth more than one extra transit, because it lets you load the boxes you were leaving on the dock. Quantify that: if the draft restriction was forcing you to leave off, say, three hundred containers per sailing, and the string is weekly, that is roughly fifteen thousand six hundred containers a year recovered per string, and that is the number the draft line is actually worth. The transit line, one extra slot a day, is a different and smaller number unless you are the operator bidding for priority. Do not confuse the two, and do not let a headline that leads with the transit number hide the draft number underneath it, because underneath is where the tonnage is.

One last note on how to read the next notice. The authority publishes changes in steps, and the steps are conservative by design, because the cost of over-promising a slot and then cutting it is higher than the cost of under-promising and then adding one. So watch for a pattern: draft restored first, then slots added slowly as the lake proves it can sustain them. If that is the sequence, then the twelfth of November is not the recovery; it is the first confirmation that the recovery is under way. And the correct response to a first confirmation is not to re-route everything, but to re-open the auction assumption in your routing model and see whether your marginal cargo now clears a slot it did not clear a month ago.

Set a date to review this, because a canal notice decays fast and the market re-prices it within weeks. Sixty days from the twelfth of November puts the review in mid-January, which is deep in the dry season and therefore the honest test of whether the lake carried the extra slot through the driest stretch. If the count is still thirty-four in mid-January, the recovery is real and you can plan the rest of the year on it. If the count slips back down, the twelfth of November was a seasonal bump and the drought constraint never really lifted. Pick that review date now, assign it to a person, and put the two readouts in front of them, because the whole point of treating the transit count and the draft as one dial is that the dial can turn back down, and you want to see it turn before your cargo is on the water.

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— By Vivian Zhao