US SEIZES OIL TANKER—Shockwaves Hit Markets

Oil rigs operating at sunset in a desert landscape.

A second U.S. tanker seizure off Venezuela exemplifies the ongoing battle against shadow fleets undermining sanctions.

Story Highlights

  • U.S. forces seized the MT Centuries, marking the second tanker seizure in weeks.
  • The vessel, heavily documented since 2020, was on its seventh sanctioned export.
  • Sanctions aim to pressure the Maduro regime by targeting Venezuelan oil exports.
  • This seizure reflects continued U.S. enforcement of maritime sanctions.

U.S. Enforces Sanctions with Second Tanker Seizure

On December 20, 2025, U.S. forces intercepted the oil tanker MT Centuries off the coast of Venezuela, marking a significant enforcement action against Venezuela’s oil trade. This vessel, documented over 700 times since 2020, was involved in its seventh sanctioned export when seized. The U.S. action highlights a targeted effort to curb the shadow fleet operations that evade sanctions imposed on the Venezuelan oil sector.

U.S. sanctions, intensified under the Trump administration in 2019, aim to financially isolate the Maduro regime by targeting PDVSA and its exports. The MT Centuries seizure follows a recent precedent of U.S. maritime interdiction, showcasing the resolve to enforce compliance among tankers obscuring ownership to bypass restrictions. This is part of a broader strategy to weaken Venezuela’s economic capabilities and disrupt its oil revenue streams.

Strategic Enforcement Amid Economic Crisis

Venezuela’s economic crisis forms the backdrop for these enforcement actions, with oil exports representing a lifeline amid U.S. sanctions. The Gulf of Venezuela, a key loading point for these shadow fleet operations, remains under vigilant monitoring through satellite and AIS data. This region’s significance is underscored by repeated violations, as documented by maritime historian Sal Mercogliano, who emphasizes the systematic nature of U.S. sanction enforcement against these clandestine operations.

While the seizure disrupts immediate oil revenue for Venezuela, it also raises insurance and operational costs for shadow fleet operators. This enforcement action sends a clear deterrent signal to future violators. The ongoing U.S. actions are likely to strain diplomatic relations with Venezuela and its allies, such as China and Russia, who may view these seizures as economic aggression rather than legitimate enforcement of international sanctions.

Implications for Future Sanction Enforcement

In the short term, the seizure of the MT Centuries disrupts Venezuela’s oil revenue, crucial amid hyperinflation, while in the long term, it may deter future exports, affecting Maduro’s financial stability. The U.S. maintains maritime superiority for enforcing sanctions, placing pressure on Venezuela and its opaque networks reliant on allies for tanker operations. As the U.S. continues to monitor Venezuelan oil flows, further actions may be anticipated, underpinning the broader geopolitical dynamics at play.

The seizure’s impact extends beyond immediate geopolitical tensions, affecting global tanker shipping, especially within sanctioned oil sectors like those involving Russia and Iran. It prompts stricter compliance measures in maritime insurance and tracking, further complicating operations for shadow fleets attempting to navigate these sanctions.