The Russian shadow fleet: Inside the ships that blur commerce and strategy

Understanding how these vessels operate — and how they might be mobilised under Russian doctrine — is increasingly important for assessing risk, enforcing sanctions, and safeguarding European waters

For Europe and for Ireland, the challenge lies not only in enforcing sanctions or preventing environmental accidents. It lies in understanding how these fleets operate, how they intersect with state policy, and what they may signal about the evolving character of maritime competition. File picture: PA

Picture a rusty, uninsured oil tanker slipping past European ports and adjacent waters, its crew underpaid, overworked, and sometimes not receiving wages. You’d worry — and rightly so. Now imagine hundreds of such vessels operating worldwide, flying foreign flags, evading registration, and moving sanctioned oil across global waters. 

This is the Russian shadow fleet: ships that are technically not Russian, but which can be rapidly returned to the Russian register if needed, giving Moscow extraordinary flexibility to integrate them into its national maritime strategy.