What does dy tankowce omijaja Suez i Plyna wokol Afryki mean in English?

It means: “These tankers are avoiding the Suez Canal and sailing around Africa.”

Phrase breakdown

• dy tankowce = “these tankers” or “the tankers.”
• omijaja Suez = “are avoiding Suez” or more naturally “are avoiding the Suez Canal.”

• i plyna wokol Afryki = “and are sailing around Africa.”

Natural English version

A smoother translation would be:

• “These tankers are bypassing the Suez Canal and going around Africa.”
• Or, more literally: “The tankers are avoiding Suez and sailing around Africa.”

In context

This usually refers to ships rerouting because of disruption or danger in the Red Sea/Suez route, which can make journeys longer and more expensive.

TL;DR

It means tankers are taking the longer route around Africa instead of using the Suez Canal.