Panama Canal transit slots are reopening and auction premiums have cooled, but the underlying capacity math has not changed. A Reuters commentary published this week argues shippers, carriers and forwarders should brace for another round of tightening later in the year.

The piece lands as the Autoridad del Canal de Panamá (ACP) has incrementally restored daily transit slots after the 2023 drought-driven cuts. Bookings have reopened. Auction premiums for guaranteed slots have cooled. Several carriers that diverted Asia-US East Coast services to the Cape of Good Hope or Suez have reportedly considered a return to the all-water routing.

The Reuters commentary pushes back on that optimism. Its thesis: only the water level has shifted, not the structural exposure. The climate drivers that drained Gatun Lake in late 2023 have not disappeared. El Niño conditions that suppressed rainfall across Central America are expected to remain active into mid-year, raising the probability of renewed freshwater constraints before the next wet season peaks.

What does the canal operator still control?

The ACP sits at the intersection of three competing pressures. It must preserve Gatun Lake levels high enough to maintain lock operations. It must restore transit slots to the levels its commercial customers expect. It must keep collecting auction revenue from carriers willing to pay to jump the queue. The Reuters commentary argues these priorities cannot all be satisfied at once, and that during the next dry spell, capacity will contract again.

Which shippers feel it first?

Container lines on the Asia-US East Coast and Asia-Europe trade lanes sit at the front of the queue. Carriers running pure Neopanamax services — among them MSC, Maersk, CMA CGM and Hapag-Lloyd — face the largest exposure because their ships physically cannot transit the older Panamax locks. Bulk grain shippers moving US Gulf and East Coast soybean and corn to Asia redirected tonnage to alternative routings during the 2023 squeeze; a renewed contraction would deepen that shift.

LNG exporters on the US Gulf Coast, which built a substantial book of Panama Canal bookings in 2022-23, would also feel the impact. With limited alternative routings for US Gulf-origin cargoes to Asia, freight rates on that lane tend to spike sharply when canal capacity tightens.

What are the commercial consequences?

• Shippers should build redundancy into Panama Canal-dependent routings now, before the next capacity contraction forces a re-routing scramble.
• Ocean carriers should keep the contingency routings activated during the 2023 squeeze, even at higher cost, because option value rises sharply if auction premiums spike again.
• Forwarders should price a sustained volatility premium into Panama Canal spot quotes rather than assume the late-2023 disruption was a one-off.

What comes next?

Watch the ACP's monthly transit slot allocation. Watch the Gatun Lake water level reports issued by the canal authority. If the dry season re-intensifies, expect auction premiums to climb back toward late-2023 highs and expect carriers to begin diverting Neopanamax tonnage off the canal again. The squeeze, the commentary argues, is not in retreat — it is merely between waves.