The Persian Gulf, Strait of Hormuz and NW part of the Gulf of Oman

This message replaces security message stating MARSEC 2 for the Persian Gulf, Strait of Hormuz and NW part of the Gulf of Oman issued by Danish Authorities on 28 FEB 2026.

Based on the assessment of the escalating conflict in the Middle East, the increased military activities and the risk of collateral damage, Danish authorities raise the ISPS security level for the Persian Gulf, Strait of Hormuz and the northwestern part of the Gulf of Oman from MARSEC 2 (two) to MARSEC 3 (three) for all Danish flagged ships in the area.

The following lines confine the MARSEC level 3 area:

North of 24°00’ N

West of 61°40’ E

Ports within the area but outside Iran remain at MARSEC 1.

The risk of GNSS and AIS interference is high in the region. It is recommended to establish security measures in accordance with Best Management Practice (BMP).

Ships should report any suspicious observations to their CSO, Danish Maritime Assistance Service (MAS), United Kingdom Maritime Trade Operations (UKMTO) and Maritime Security Centre – Indian Ocean (MSCIO) in accordance with BMP.

If Danish ships are in imminent danger, they should activate the Ship Security Alert System (SSAS) and send a distress message via the Digital Selective Calling system (DSC).

The national Danish ISPS Coordination Authority will continuously monitor the situation and update the security level with a new OXXO, when necessary and no later than 30 June 2026.

Point of contact:

MAS – mas@sok.dk – +45 72 85 03 71.

MAS will forward any questions to the Danish ISPS Coordinating Authority.

Contact

Danish Maritime Authority
The Persian Gulf, Strait of Hormuz and NW part of the Gulf of Oman
Ship Survey, Certification and Manning