Iran observes all U.S. ships in the Gulf region and has an archive of images of their daily movements, the head of Iran's navy, Rear Admiral Hossein Khanzadi, said on Tuesday, according to the Young Journalists Club news site.
"We observe all enemy ships, particularly America, point-by-point from their origin until the moment they enter the region," Khanzadi said, noting that images were recorded using Iranian drones. "We have complete images and a large archive of the daily and moment-by-moment traffic of the coalition forces and America."
Iran and the United States came to the brink of war last month after the Islamic Republic shot down a U.S. drone, nearly prompting a retaliatory attack which U.S. President Donald Trump called off at the last minute.
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On Friday, Iran seized a British-flagged oil tanker in the Strait of Hormuz, escalating regional tensions. In response, Britain has urged all shipping associates to inform Britain's navy of their movements before sailing into the Middle East Gulf and the Strait of Hormuz.
About a fifth of the world's oil passes through the Strait of Hormuz and shipping companies are already deploying more unarmed security guards as an extra safeguard.