— The stakes just rose for U.K. oil tankers passing through the Strait of Hormuz from the Persian Gulf, after a Royal Navy frigate warned off three Iranian patrol boats that attempted to impede the passage of a BP Plc-owned vessel. On Wednesday evening the HMS Montrose was escorting the oil tanker British Heritage through the chokepoint when its charge was approached by the Iranian ships. These reportedly attempted to force the Isle of Man-flagged tanker to change direction into Iranian waters. A U.S. aircraft was overhead and recorded footage of the episode, CNN reported, which could help settle the matter.
In April 2015 the Maersk Tigris, a cargo ship flying the flag of the Marshall Islands, was seized by Iran in international waters. The incident related to a decade-old dispute over 10 cargo containers. The following month the U.S. Navy began accompanying U.S. Its capture was one of three incidents involving merchant ships in and around Hormuz at that time. These coincided with rising tensions between hard-liners and more moderate factions in Iran’s political system, and rising tensions over conflicts in the Mideast.
This time, Iran has made specific threats against British ships after U.K. special forces impounded the supertanker Grace 1 last week off Gibraltar. That vessel was alleged to be hauling around 2 million barrels of oil to Syria, which put it in breach of European Union sanctions. The crude originated in Iran, and its military has vowed to retaliate – the country is one of the only suppliers left to President Bashar Al-Assad’s government. The harassing of the British Heritage would seem to be the first evidence of that retaliation.
But this need not signal the start of wider problems for shipping through the Strait of Hormuz – at least not yet. Iran still wants to find ways to export its own crude. There were eight Manx-flagged tankers in the Persian Gulf in the past five days, according to tanker tracking data compiled by Bloomberg. Four of them are still there and will probably seek a military escort out of the region.
The HMS Montrose is the only British naval vessel in the region, according to the MOD, so it looks like it is going to be kept busy.
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