Positions of ships in and near the Strait of Hormuz on the 3rd. Iran declares on the 28th last month (local time) that it will blockade the Strait of Hormuz, through which 20% of the world's seaborne crude oil trade passes. The Strait of Hormuz connects the Persian Gulf and the Gulf of Oman. /Courtesy of MarineTraffic

Two cargo ships passed through the Strait of Hormuz on the 5th, which is known to be effectively blockaded by Iranian forces, NHK reported.

NHK, after analyzing ship movements with support from the operator of the ship location information service "MarineTraffic," stated accordingly.

According to NHK, from 1 p.m. on the 3rd, after U.S. and Israeli airstrikes on Iran, there were no confirmed ship movements through the Strait of Hormuz for about a day and a half. Then, around 6 a.m. on the 5th, one cargo ship passed the strait and entered the Gulf (Persian Gulf), and around 10 a.m. the same day, a cargo ship that had been moored at the port of Dubai in the United Arab Emirates (UAE) exited the Gulf.

Of these, the cargo ship that left the Gulf is owned by a Japanese corporations, and when it passed through the Strait of Hormuz, it appeared to travel farther from the Iranian side than usual, NHK said.

For the cargo ship that entered the Gulf, its location information was not confirmed before and after it passed through the Strait of Hormuz, leading NHK to surmise that the device that transmits a ship's position may have been temporarily turned off.

A representative of the MarineTraffic operator told NHK, "We do not know the exact reason, but turning off the device is permitted when danger is imminent or in unavoidable cases to ensure the safety of the vessel."

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