Casablanca's Congestion Problem Just Found a Workaround — Through Tangier

17 million tons moved through Casablanca in the first half of this year. That's up 7% from last year. June alone was up 32%. Growth like that sounds great on a slide deck. On the ground, it means longer waits, tighter berth windows, and forwarders scrambling to protect delivery dates. Casablanca handles roughly a third of all Moroccan port traffic — there's only so much a single port can absorb before something has to give. 

Maersk gave first. Instead of pushing more vessels into an already strained port, they rerouted. Since August 2026, Casablanca-bound cargo doesn't sail straight in anymore. It lands at Tanger Med, then moves inland by rail.

How the New Routing Works

It's a five-step chain: ocean leg to Tanger Med, rail to Casablanca, customs clearance, inland storage, then last-mile trucking. On paper it looks like an extra step. In practice, it's Maersk betting that a predictable rail schedule beats an unpredictable queue at the quay.

This isn't a stopgap. ONCF is mid-way through a $10 billion rail overhaul — Rail 2040 — that includes dedicated freight tracks along the Atlantic corridor. The African Development Bank backed part of it with a €205 million loan in July, tied directly to the Kenitra–Marrakech line and the Casablanca rail hub. Morocco also dropped the peak season surcharge on this route back in June. Put those together and it's clear: this corridor is meant to be permanent infrastructure, not a workaround for a bad quarter.

Why Tangier Can Absorb It

Tanger Med isn't stretching to take this on — it's built for exactly this. In August, it took a call from the CMA CGM Notre-Dame, a 24,212 TEU vessel and one of the largest container ships operating anywhere. Last year alone the port logged close to 17,000 vessel calls, over 1,300 of them from ships longer than 290 meters. That's not overflow capacity. That's a port that's been quietly positioning itself as Morocco's real gateway for years, and is now cashing in on it.

What It Means If You Move Freight Here

I've seen enough routing shifts to know this one isn't cosmetic. A few things forwarders and shippers should actually do about it:

• Stop treating "direct to Casablanca" as the default. Compare the Tangier-plus-rail routing on reliability, not just headline transit time. Reliability is what's actually breaking down at Casablanca right now.
• Confirm where clearance happens. With cargo clearing customs en route rather than at final destination, your paperwork timing needs to match the new flow — not the old one.
• Push your carrier on pricing. The surcharge removal in June tells you Morocco wants this route to compete on cost. If your contract still assumes a direct-call premium, that's a renegotiation conversation worth having now.
• Watch capacity as Rail 2040 scales. More carriers will likely follow Maersk's lead here. Build that into how you plan routing twelve months out, not just this quarter.

The Bigger Picture

Tangier stopped being just "the port closest to Europe" a while ago. This corridor is proof it's becoming Morocco's actual internal distribution backbone — not because Casablanca failed, but because it succeeded too fast for its own infrastructure to keep up. Anyone building a logistics career or business around this corridor should be paying attention to Tangier's role inland, not just its role as a transshipment hub to the EU.