The Panama Canal Authority is reducing daily vessel booking capacity from 36 to 34 slots starting July 25, suspending auctions for close-in "Period 3" transit slots that cover regular and super Panamax vessels. The move, reported by shipping agency Norton Lilly, is driven by concerns that a developing El Niño weather pattern could constrain water supplies and disrupt operations at one of global shipping's most critical chokepoints.
Capacity Cut and Slot Suspension
From July 25, auctions for Period 3 slots — available between 96 and 48 hours before transit — will be suspended until further notice, according to Norton Lilly. These slots are particularly valuable for vessels operating without advance reservations or on tight schedules. The suspension applies to regular and super Panamax vessels, while neopanamax auctions will continue. Extraordinary auctions will remain available when vessels cancel or move forward their scheduled passages.
| Transit Slot Type | Previous Availability | New Availability (from July 25) |
|---|---|---|
| Daily booking capacity (all vessels) | 36 | 34 |
| Period 3 (96–48 hrs before transit) | Regular + super Panamax auctions | Suspended |
| Neopanamax auctions | Continued | Continued |
| Extraordinary auctions (for cancellations) | Available | Available |
Norton Lilly warned that affected vessels could face greater difficulty securing passages and should build more flexibility into voyage planning. Competition is expected to increase for Period 1 slots, which can be booked up to a year ahead, and Period 2 slots offered 21 days before transit.
Drivers: El Niño and Global Disruption
The restriction comes amid stronger demand for canal passages because of disruptions elsewhere, according to Splash247. Traffic through the Strait of Hormuz has slowed sharply following attacks on commercial vessels, while Houthi threats continue to deter some shipping from the Red Sea and Bab el-Mandeb. High US LNG export volumes have also increased demand for canal transits. Neopanamax auction prices reportedly exceeded $4 million earlier this year as operators competed for scarce slots.
The latest measure follows a reduction in maximum allowable draft introduced on July 1. The canal authority used similar tools during the 2023–2024 drought, including lower transit numbers, draft restrictions, double lockages and water-saving measures.
Implications for Shippers and Operators
Current waiting times remain manageable, according to Splash247. As of July 21, 16 vessels without bookings were waiting to transit, with average delays over the previous 28 days of 2.4 days northbound and 4 days southbound. However, the suspension of Period 3 slots will likely push demand onto earlier booking windows, potentially raising auction prices for Period 1 and Period 2 slots. Shippers using super Panamax vessels without advance reservations should prepare for longer wait times and consider alternative routing or earlier bookings.
Watch List
Operators should monitor the El Niño forecast closely, as worsening drought conditions could prompt further capacity cuts or draft restrictions. The canal authority's response during the 2023–2024 drought — which included transit reductions to as low as 24 vessels per day — provides a precedent for potential escalation. Additionally, any resolution of geopolitical disruptions in the Strait of Hormuz or Red Sea could ease demand pressure, while continued strong US LNG exports will keep canal traffic elevated.
Sources:
