The Hormuz Effect: Why Supertanker Volumes Dropped 36% & Stocks Are Sliding

What’s Going on With Shipping? (Sal Mercogliano)
What’s Going on With Shipping? (Sal Mercogliano)May 19, 2026

Why It Matters

The Hormuz impasse constrains a fifth of the global VLCC fleet, driving rate volatility and forcing shippers to re‑route cargoes, which could reshape oil logistics and pricing once the strait reopens.

Key Takeaways

  • VLCC volumes fell 36% after Hormuz shutdown, rates stabilize.
  • Atlantic‑to‑Pacific VLCC voyages rose to 35% of exports.
  • Over 150 VLCCs (≈17% fleet) trapped in or near Hormuz.
  • MR tanker daily rates plunged from $100k to $6.5k.
  • Chinese tanker stocks slid 2‑4% as market inflection point emerges.

Summary

The episode examines how the effective closure of the Strait of Hormuz has reshaped the global supertanker market, focusing on a 36% drop in very large crude carrier (VLCC) volumes and the subsequent softening of freight rates. It breaks down tanker classes—from ultra‑large crude carriers to medium‑range product tankers—and explains why the disruption has forced a reallocation of cargoes and altered traditional trade lanes. Data from Lloyd’s List and Vortex shows VLCC exports averaging 14.4 million barrels per day over the past eight weeks, down sharply from earlier months. Atlantic‑to‑Pacific VLCC voyages now represent 35% of crude exports, up from 22%, as carriers reroute from the Persian Gulf to the U.S. Gulf and other basins. Meanwhile, more than 150 VLCCs—about 17% of the world fleet—remain trapped inside or waiting to enter Hormuz, inflating available tonnage and keeping rates artificially high. Greg Miller’s commentary highlights three drivers: longer Cape of Good Hope voyages increasing ton‑miles, a sizable block of vessels stuck in the Gulf, and operators demanding safety guarantees before moving cargo. He notes MR tanker daily rates collapsing from $100,000 to $6,500, while LR and VLCC rates have steadied above $100,000. Chinese tanker stocks fell 2‑4% as investors price in the market’s inflection point. The situation underscores a fragile equilibrium: any reopening of Hormuz could unleash a flood of VLCCs, depress rates further, and strain the already‑tight supply chain. Shippers are weighing the cost of longer routes against the risk of environmental damage, while refiners adjust demand amid broader oil‑price volatility.

Original Description

With the ongoing crisis in the Strait of Hormuz, the industry is seeing unprecedented disruptions. Supertanker (VLCC) cargo volumes have plummeted by 36%, yet voyages are getting longer as ships divert around the Cape of Good Hope. Sal breaks down the latest data from Lloyd's List and the Baltic Exchange to explain why tanker stocks are sliding, how rates for different vessel types (VLCC, Suezmax, Aframax, and MR tankers) are stabilizing, and what this means for global energy costs.
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Marine Traffic
www.marinetraffic.com
Hormuz crisis slashes VLCC volumes by 36% but voyages are longer
VLCCs are once again outperforming aframaxes and product tankers
Tanker stocks slide as Hormuz-driven rally shows cracks
IEA Oil Market Report May 2025

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