Sky’s Data and Forensics team has been monitoring shipping through the Strait of Hormuz – a strategically vital waterway for Iran and other oil producers in the Middle East.
Maritime activity has been almost brought to a standstill as the US and Iran have traded strikes.
Hundreds of tankers are usually travelling through the Strait of Hormuz between Persian Gulf and the Gulf of Oman at all times, with Iran to the north and Oman and the United Arab Emirates to the south. It’s the only marine outlet for this region’s main oil producers including Iran.
In 2024, around a fifth of all global oil was flowing through the narrow waterway – the equivalent of 20 million barrels a day.
Oil tanker positions around the world, 1 March 2026. Source: Kpler/Marine Traffic
A snapshot from a month ago on February 1, shows how busy the waterway is with vessels passing into and out of the waterway.
Tankers in the straight of Hormuz, 1 February 2026. Source: Kpler/Marine Traffic
On February 28, the day after the US and Israel carried out their first strikes on Iran, far fewer vessels were in the area and very little movement. By March 1, very few ships were in the straight, and vessels appeared to cluster around large ports either side of the strait.
Tankers in the Straight of Hormuz, March 1 2026
Sky’s Data and Forensic team tracked several individual tankers. One – the KHK Empress – was already in the strait before turning back on Saturday at around 10:00 AM UTC. By Saturday evening, 4 others had turned away from the strait to head back out into the Gulf. And by Sunday they were all on the move out of the region.
Analytics agency Kpler estimates that these five ships have the capacity to carry around 10 million barrels of oil.
Sky News has tracked five oil tankers turning away from the straight of Hormuz, 1 March 2026. Source: Kpler/Marine Traffic
Fear of being targeted on the route are not unfounded. On March 1, a Palau-flagged oil tanker ‘The Skylight’ was attacked. Four people were injured and the whole crew of 20 people was evacuated – check latest.
The US navy is warning against navigation through the strait and some traders are suspending transit.
And interference to the ship tracking and communication system, AIS, is making the area even more dangerous. The images below show a normal amount of AIS signalling on February 27, but this is dramatically increased on February 28.
AIS signals from ships in the Straight of Hormuz have been disrupted by interference. Source: Kpler/Marine Traffic
Volatility in the Gulf will have an impact across the world. Disruption here will in turn disrupt global markets and international trade.