Navigation Systems

5/7/2018: U.S. Maritime Advisory 2018-007 – GPS Interference in Eastern Mediterranean Sea

As a courtesy to our readers, Maritime Commons is sharing the content of U.S. Maritime Advisory 2018-007 to notify our readers that multiple instances of significant GPS interference have been reported by vessels and aircraft operating in the Eastern Mediterranean Sea since March 18, 2018. These reports have been concentrated in the vicinity of Port Said, Egypt and the Suez Canal, and south of the Republic of Cyprus. This interference is resulting in lost or otherwise altered GPS signals affecting bridge navigation, GPS-based timing and communications equipment. Exercise caution when transiting this area.

The Coast Guard Navigation Center, in 2017, posted information regarding effective navigation practices for vessels experiencing GPS interference. The information reaffirms safe navigation practices when experiencing possible GPS disruption, provides useful details on reporting possible GPS disruption, and is intended to generate further discussions within the maritime community about other disruption mitigation practices and procedures. This guidance also recommends taking note of critical information such as the location (latitude/longitude), date/time, and duration of the outage/disruption, and providing photographs or screen shots of equipment failures during a disruption to facilitate analysis.

GPS disruptions or anomalies should be immediately reported to the Navigation Center online or via phone at 703-313-5900, 24 hours a day.

This message will automatically expire on Nov. 2, 2018.

For more information about this advisory or other alerts and/or advisories, visit the Maritime Security Communications with Industry (MSCI) Web Portal.

This blog is not a replacement or substitute for the formal posting of regulations and updates or existing processes for receiving formal feedback of the same. Links provided on this blog will direct the reader to official source documents, such as the Federal Register, Homeport and the Code of Federal Regulations. These documents remain the official source for regulatory information published by the Coast Guard.

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