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Mine threat in parts of Hormuz not fully understood, US navy advisory says

By Thomson Reuters Apr 17, 2026 | 10:22 AM

LONDON, April 17 (Reuters) – The threat posed by mines in parts of the Strait ​of Hormuz is not ‌fully understood and avoidance of the area by ships should be considered, a U.S. navy advisory said ‌on ​Friday.

“Status of TSS ⁠mine threat is ⁠not fully understood. Consider avoidance of that area,” said the advisory sent by the US ​navy’s US NCAGS agency to mariners and seen by ⁠Reuters.

The TSS refers ⁠to the so-called Traffic ​Separation Scheme, which was adopted ​by the U.N.’s shipping agency in ‌1968 with agreement of countries in the region, and created a ship routing system ⁠that split sailing corridors through Iranian and Omani waters in the strait.

It ⁠was ‌not immediately clear whether ⁠the advisory was sent ​before ‌or after Iranian Foreign ​Minister Abbas ⁠Araqchi said the Strait of Hormuz was open following the agreement of a ceasefire in Lebanon.

(Reporting by Jonathan Saul;Editing by ​Alison Williams)