Maritime Security Report: 18-24 May 2026

Palaemon Maritime
5 hours ago
3 min read

This week saw five maritime security incidents, marked by intensifying U.S. enforcement of the naval blockade of Iran and persistent piracy activity.

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Executive Summary

Indian Ocean

U.S. Blockade Enforcement: U.S. forces continue to actively enforce the naval blockade of Iran in the Indian Ocean. The Botswana-flagged VLCC Skywave was seized off the western Malaysian coast, reportedly carrying over one million barrels of Iranian oil. This marks the third such seizure following the interceptions of tankers Majestic X and Tifani in April, signalling a sustained and expanding enforcement campaign.
Resurgent Piracy Threat off Somalia: The piracy threat off the Somali coast remains active. The MSCIO reported a Pirate Action Group mobilising near Bosaso, with unconfirmed reports suggesting an intention to hijack a merchant vessel. This is compounded by two separate suspicious approaches against tankers north and west of Socotra, both repelled by Armed Security Teams.

Europe

War Spillover Continues: Merchant shipping in the Black Sea remains exposed to the ongoing Russia-Ukraine conflict. A Marshall Islands-flagged bulk carrier was struck by an unknown projectile whilst transiting towards Pivdennyi port, Odessa, resulting in an onboard fire that was successfully extinguished by the crew.

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Key Incidents by Region

Indian Ocean

19 May 2026

U.S. forces seized the Botswana-flagged crude oil tanker Skywave in the Indian Ocean, in what marks the third such seizure following the interceptions of tankers Majestic X and Tifani in April. The vessel was intercepted off the western Malaysian coast after transiting the Malacca Strait, reportedly carrying over one million barrels of Iranian oil. The Skywave had been sanctioned by the U.S. in March for transporting Iranian oil.

18 May 2026

The MSCIO reported that a Pirate Action Group has been identified mobilising in the vicinity of Bosaso, Somalia, though the exact position has not been specified. Operation ATALANTA is currently investigating in coordination with relevant maritime security authorities. Subsequently, further unconfirmed information was received suggesting that the group's possible intention is to attempt the hijacking of a merchant vessel.

22 May 2026

Reports indicate that a tanker was approached by a small craft with five persons onboard whilst underway approximately 98nm north of Socotra. The vessel's armed security team responded by firing warning shots at the craft, which prompted it to alter course and disengage.

23 May 2026

Reports indicate that a products tanker was approached by a small craft with five persons onboard whilst underway approximately 200nm west of Socotra. The small craft closed to within 100m of the vessel before the armed security team was deployed, after which the craft altered course and disengaged without further incident. No injuries or damage have been reported.

Europe

18 May 2026

Open-source reports indicate that a Marshall Islands-flagged bulk carrier was struck by an unknown projectile whilst transiting towards Pivdennyi port, Odessa. The strike caused a fire onboard, which was successfully extinguished by the crew.

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Threat Outlook

Region	Threat Level	Assessment
Indian Ocean	High	U.S. blockade enforcement operations continue to escalate, with a third Iranian tanker seized. Piracy threats off Somalia remain active with a PAG mobilising near Bosaso.
East Africa/ Gulf of Aden	High	Multiple suspicious approaches against tankers near Socotra indicate continued opportunistic piracy activity in the corridor.
Europe	High	Continued drone and projectile warfare targeting merchant vessels transiting towards Ukrainian ports poses ongoing operational risk.
Gulf of Guinea	Medium	Anchorages and ports remain at risk of unauthorised boardings and violent theft.

Operational Guidance

Operators should:

Avoid transiting to or from Iranian ports and ensure full compliance with CENTCOM blockade directives to avoid interception or seizure.
Maintain high vigilance in the Gulf of Oman, Strait of Hormuz and Indian Ocean, monitoring for UAVs, projectiles, and naval vessels.
Contact U.S. naval forces on channel 16 when approaching the Strait of Hormuz.
Transit the Internationally Recommended Transit Corridor in the Gulf of Aden and adhere to BMP-MS guidelines when operating off Somalia.
Maintain Armed Security Teams on readiness when transiting high-risk areas near Socotra and the Horn of Africa.
Strengthen onboard fire prevention and damage control readiness, ensuring crew are drilled and equipment is operational.
Report all suspicious activity immediately to UKMTO, MSCIO, and relevant maritime authorities.
Monitor AIS, radar, and NAVWARNs for anomalies and updates.