Somali pirates hijack oil tanker off Yemen with 20 crew amid resurgence in Gulf of Aden

On August 20, 2026, six armed Somali pirates hijacked the U.S.-sanctioned oil tanker Seamull (SIBU 1) off the coast of Yemen, taking its 20 crew members hostage and diverting the vessel toward Somalia. The incident marks the sixth commercial vessel seized since April 2026, signaling a major resurgence in regional piracy. Security experts warn that the U.S.-Iran war has diverted vital naval resources, while growing ties between Houthi rebels and Somali militants threaten to further destabilize the Gulf of Aden.

Seamull tanker hijacking off Yemen

• ▪The hijacked Seamull tanker was carrying 20 crew members, including 16 Indians, one Syrian, one Sudanese, and one Iraqi, with the nationality of one crew member unknown.
• ▪Following the boarding, the armed hijackers took control of the Seamull tanker and redirected the vessel toward the Puntland coast of Somalia.
• ▪On August 20, 2026, six armed individuals boarded and hijacked the Eritrean-flagged oil products tanker Seamull, also known as SIBU 1, approximately 136 nautical miles east of Al Mukalla, Yemen.

Somali piracy resurgence April 2026

• ▪Prior to the Seamull, Somali pirates hijacked the Honor 25 on April 21, the Sward on April 26, the Eureka on May 2, the Asana on July 17, and the Lutuf on August 17, 2026.
• ▪The hijacking of the Seamull tanker on August 20, 2026, marks the sixth commercial vessel seized by Somali pirates since April 21, 2026.
• ▪The International Maritime Bureau reported 38 piracy and armed robbery incidents globally in the first half of 2026, with Somali pirates accounting for 94% of hostages taken.

Iranian shadow fleet sanctions

• ▪The Seamull is operated by UAE-based Qatrat Alnada Almasi Ship Management, which has had four of its vessels sanctioned for transporting Iranian petroleum products to Houthi-controlled ports.
• ▪The Seamull tanker was sanctioned by the United States Treasury Department in December 2025 for allegedly operating as part of an Iranian shadow fleet to evade oil sanctions.

Iran war maritime security

• ▪The ongoing U.S.-Iran war and regional conflicts have stretched naval forces thin, diverting international warships away from anti-piracy patrols to secure other critical waterways.
• ▪Houthi attacks in the Red Sea have forced commercial vessels to transit closer to the Somali coastline, exposing them to active pirate hotspots.
• ▪Yemen Transport Minister Mohsen Haidara Al-Omari announced on August 20, 2026, the creation of a National Maritime Security Committee to protect shipping routes in the Red Sea.

Houthi militant group ties

• ▪Dryad Global CEO Corey Ranslem warned that a formalized alliance between Al-Shabaab and the Houthis could grant Somali pirates access to advanced Houthi missile and drone technology.
• ▪United Nations reports indicate that Houthi militants and armed groups in Somalia have strengthened ties through weapons transfers, training, and intelligence support.

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