Six Russian oil tankers still under construction by Russia's Zvezda shipyard were included in U.S. sanctions imposed last week, the first time Washington is known to have banned tankers before they even set sail,

On Jan. 10 the US Treasury’s Office of Foreign Assets Control sanctioned 161 tankers and traders involved in about 2,000 shipments since the invasion began. It also acted against Moscow-based ship insurers and two companies — Surgutneftgas and Gazpromneft — which in the first 10 months of last year accounted for almost 30% of Russia’s oil exports.

A tanker carrying Russian crude discharged at a port operated by Shandong Port Group in east China on Thursday.

A tanker subject to the new U.S. sanctions is discharging Russian oil at a port operated by Shandong Port Group in east China, shipping data on LSEG Eikon showed on Thursday.

An oil tanker sanctioned in Washington’s harshest round of curbs against Russia’s energy industry has become the first such vessel to dock at the Russian port of Kozmino, where it’s loading a cargo of crude.

Nearly 500,000 metric tons of Russian oil products are trapped on tankers hit by U.S. sanctions, LSEG data showed on Wednesday. On Jan. 10, new Russia-related sanctions targeted more than 180 vessels and insurance companies,