As promised, the US blacklisted a swath of Iranian companies on Friday, hitting a Chinese shipowner and one of its bulkers in the process.

Amid a flurry of sanctions targeting the Islamic republic's metals industry, Shanghai's Hongyuan Marine and its 34,223-dwt Hong Xun (built 2014) ended up being listed by the US Treasury Department.

"In September 2019, the vessel Hong Xun transported steel slabs purchased by Pamchel Trading Beijing Co.