Iran said 77 vessels have been placed on a sanctions list over alleged violations in the Strait of Hormuz, as commercial shipping through the strategic waterway remained well below recent averages.
The Persian Gulf Waterway Administration, established by Iran to regulate passage through the Strait of Hormuz, announced the sanctions in a statement on vessel violations in the waterway.
The administration said sanctions would also apply to other vessels and insurance companies that cooperate with the listed ships.
It did not disclose the nationalities of the sanctioned vessels or provide details on the measures imposed against them.
Commodity vessel traffic through the Strait of Hormuz fell to single digits per day over the weekend, remaining below the 10-day average of 14 vessels, according to preliminary ship-tracking data reported by Reuters on Monday.
Four vessels exited the Gulf through the strait over the weekend.
They included a Handysize vessel sailing in ballast, a Handy vessel carrying liquefied petroleum gas, a Supramax carrying fertilizer and a Suezmax loaded with crude oil or condensate.
Ten vessels entered the Gulf during the same period, according to the data.
Those included a mini-bulker carrying minor bulk commodities, a Handymax carrying grain, a Panamax carrying metals and a Supramax transporting dry bulk cargo.
The figures showed that shipping activity through the Strait of Hormuz continued to remain below its recent 10-day average as Iran announced sanctions against vessels it said had violated rules governing passage through the waterway.