U.S. Indo-Pacific Command forces boarded the sanctioned, stateless tanker MT Davina in the Indian Ocean on June 5, 2026 [1].

The operation targets the network of oil exports linked to Iran, aiming to increase economic pressure on the nation by disrupting its ability to move sanctioned petroleum products.

The interdiction occurred overnight on June 5, 2026 [1], in a region of the Indian Ocean located far from the Strait of Hormuz [2]. Military officials described the action as a "maritime interdiction and right-of-visit boarding," a U.S. military spokesperson said [3].

The MT Davina is identified as a stateless vessel [1]. By boarding the ship, U.S. forces seek to enforce international sanctions that prohibit the transport of Iranian oil through unauthorized channels. The move is part of a broader strategy to curtail the funding of Iranian activities through the monitoring of maritime traffic in the region [2].

U.S. forces have increased their presence in the Indian Ocean to counter the use of "ghost fleets" — vessels that operate without clear nationality or registration to evade detection. The boarding of the MT Davina follows a series of efforts by the U.S. military to intercept ships connected to Iran's export network [2].

Video released by the U.S. military shows the process of the boarding and the securing of the vessel [3]. The operation was carried out without reported casualties or significant escalation during the initial boarding phase [1].

The operation was described as a "maritime interdiction and right-of-visit boarding."

This interdiction signals a shift toward more aggressive enforcement of sanctions in open waters far beyond the immediate vicinity of the Persian Gulf. By targeting stateless vessels like the MT Davina, the U.S. is attempting to close the legal loopholes that allow Iran to utilize 'dark fleets' to bypass economic restrictions and maintain oil revenue.