Panama Canal to Cut Neopanamax Draft Twice in July, August

Panama Canal Tightens Draft Limits Again

The Panama Canal Authority (ACP) has confirmed it will reduce the maximum permitted draft for vessels transiting the Neopanamax locks in two further steps this summer. According to a report by The Maritime Executive, the move follows a preemptive draft reduction made in June and is being driven by forecasts of what could be one of the more severe El Niño events in recent years.

In a notice dated July 1, the ACP said the adjustments form part of its broader water management strategy, with close monitoring of Gatun Lake, the canal’s main reservoir feeding the lock system.

The New Draft Schedule

Under the plan, the maximum draft for the largest vessels using the Neopanamax locks will drop by half a foot to 49 feet on July 24. A further half-foot reduction is scheduled for August 15, bringing the limit down to 48.5 feet. Both figures represent a decline from the standard 50-foot draft that had been in place through the spring.

Milder Than the 2022-2023 Drought

The ACP was careful to note that these restrictions are considerably less severe than those imposed during the 2022-2023 drought, when draft limits were repeatedly cut into the 43-to-44-foot range and eventually fell as low as 38.5 feet. During that earlier crisis, the authority also had to reduce the number of daily transits, which triggered long backlogs and sharply higher prices in the slot-booking auction system. That period saw large gas carriers reroute around South America and some container operators offload cargo for overland transshipment across the isthmus to avoid delays.

Acting Early to Avoid Disruption

By adjusting draft limits ahead of time, the ACP says it hopes to avoid a repeat of the congestion and cost spikes seen previously. The authority’s own dashboard currently points to smooth operations: as of July 6, only 10 non-booked ships were waiting, alongside 65 vessels with reserved slots queuing off either end of the canal. Waiting times for non-booked ships have fallen sharply from their recent peaks — down to 4 days northbound (from 11.5 days) and 1.8 days southbound (from 15 days in June).

The ACP also noted that traffic through the canal has surged this year following the closure of the Strait of Hormuz and related regional disruptions, which pushed transit-slot auction prices to record levels. The authority said it appreciates the ongoing cooperation of the maritime community as it manages the situation.

What It Means for Owners and Charterers

Even modest, half-foot draft reductions carry real commercial weight for operators running Neopanamax-sized ships close to their maximum permissible draft. A vessel that has already been loaded to the previous 50-foot limit may need to discharge or lighter cargo before it can transit once the new restriction takes effect, and any miscalculation risks a costly rejection at the locks or a forced diversion. This is precisely where accurate, independently verified draft surveys become critical — confirming actual displacement and freeboard against the canal’s current limits before a vessel commits to its transit slot, rather than relying on outdated figures from the loading port.

The broader lesson from the 2022-2023 drought is that water-driven restrictions can escalate quickly and unpredictably once El Niño conditions intensify. Owners and managers routing tonnage through Panama should treat the July and August cuts as an early warning rather than a final ceiling, and build contingency margins into stowage plans, bunker calculations, and charter party draft warranties. For vessels already booked through the canal, a pre-transit condition and draft check can help avoid disputes over demurrage or restow costs if drafts need to be adjusted at short notice. With auction prices for transit slots already elevated due to unrelated disruptions near the Strait of Hormuz, the cost of getting draft calculations wrong — and missing a booked slot — is higher than usual this season.

Reviewed by Ibrahim Halil Ceylan, Marine Surveyor at Apeks Marine.