It was quite a week for New York-listed tanker stocks, buoyed by regulatory actions, and it finished with a bang on Friday with the latest US sanctions against Russia.

Crude market bellwether Frontline jumped nearly 10% on Friday on Treasury Department actions against Russian-trading ships, and was working on a 22% gain for the full week.

But the John Fredriksen flagship was far from alone: most crude names gained between 5% and 10% on Friday and larger margins for the full week.