{"id":25228,"date":"2025-06-23T12:05:43","date_gmt":"2025-06-23T12:05:43","guid":{"rendered":"https:\/\/shipip.com\/?p=25228"},"modified":"2025-06-23T12:05:43","modified_gmt":"2025-06-23T12:05:43","slug":"gps-jamming-advisory-strait-of-hormuz","status":"publish","type":"post","link":"https:\/\/developmenttask.com\/ShipIpLtd\/gps-jamming-advisory-strait-of-hormuz\/","title":{"rendered":"Advisory on GPS Jamming and Alternative Navigation Measures Near the Strait of Hormuz"},"content":{"rendered":"<p class=\"ds-markdown-paragraph\"><strong>To:<\/strong>\u00a0All Ship Owners, Operators, Masters, and Navigating Officers<\/p>\n<h3><strong>1. Background<\/strong><\/h3>\n<p class=\"ds-markdown-paragraph\">Recent reports indicate an increased risk of\u00a0<strong>GPS signal interference or jamming<\/strong>\u00a0in the vicinity of the\u00a0<strong>Strait of Hormuz<\/strong>. Vessels operating in this region should remain vigilant and prepare for potential disruptions to\u00a0<strong>Global Navigation Satellite Systems (GNSS)<\/strong>, including GPS.<\/p>\n<h3><strong>2. Recommended Actions<\/strong><\/h3>\n<p class=\"ds-markdown-paragraph\">In the event of suspected or confirmed GPS jamming, vessels are strongly advised to employ\u00a0<strong>alternative navigation techniques<\/strong>\u00a0to ensure safe passage. The following measures should be considered:<\/p>\n<h4><strong>A. Non-GPS Navigation Methods<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Celestial Navigation:<\/strong>\u00a0Use sextant observations for celestial fixes.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Radar Navigation:<\/strong>\u00a0Cross-check positions using radar bearings and ranges.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Dead Reckoning (DR):<\/strong>\u00a0Maintain accurate logs of course and speed for position estimation.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Inertial Navigation Systems (INS):<\/strong>\u00a0Rely on gyrocompass and inertial sensors if available.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Visual &amp; Terrestrial Aids:<\/strong>\u00a0Verify positions using lighthouses, buoys, and landmarks.<\/p>\n<\/li>\n<\/ul>\n<h4><strong>B. Operational Precautions<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Cross-Verify Positions:<\/strong>\u00a0Use multiple independent methods to confirm location.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Monitor AIS\/ECDIS Discrepancies:<\/strong>\u00a0Be aware that these systems may be compromised without GPS.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Report Incidents:<\/strong>\u00a0Notify nearby vessels, port authorities, and maritime agencies (e.g., UKHO, IMB) of suspected jamming.<\/p>\n<\/li>\n<\/ul>\n<h3><strong>3. Contingency Planning<\/strong><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Ensure\u00a0<strong>bridge officers<\/strong>\u00a0are trained in manual navigation.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Conduct\u00a0<strong>GPS-denial drills<\/strong>.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Carry\u00a0<strong>updated paper charts<\/strong>\u00a0as a mandatory backup.<\/p>\n<\/li>\n<\/ul>\n<h3><strong>4. Additional Resources<\/strong><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>IMO Guidelines (MSC.1\/Circ.1572)<\/strong><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>UKHO Maritime Security Chart Q6099<\/strong><\/p>\n<\/li>\n<\/ul>\n<h3><strong>5. Contact Information<\/strong><\/h3>\n<p class=\"ds-markdown-paragraph\">For urgent assistance or further guidance, contact:<\/p>\n<p class=\"ds-markdown-paragraph\"><strong>SHIP IP LTD<\/strong><br \/>\n\ud83d\udcde\u00a0<strong>Tel:<\/strong>\u00a0(+359) 24929284<br \/>\n\ud83d\udce7\u00a0<strong>Email:<\/strong>\u00a0<a href=\"https:\/\/mailto:sales@developmenttask.com\/ShipIpLtd\/\" target=\"_blank\" rel=\"noopener noreferrer\">sales@shipip.com<\/a><br \/>\n\ud83c\udf10\u00a0<strong>Website:<\/strong>\u00a0<a href=\"http:\/\/www.shipip.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.shipip.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>To:\u00a0All Ship Owners, Operators, Masters, and Navigating Officers 1. Background Recent reports indicate an increased risk of\u00a0GPS signal interference or jamming\u00a0in the vicinity of the\u00a0Strait of Hormuz. Vessels operating in this region should remain vigilant and prepare for potential disruptions to\u00a0Global Navigation Satellite Systems (GNSS), including GPS. 2. Recommended Actions In the event of suspected [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":25222,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44,57,168],"tags":[20],"class_list":["post-25228","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-maritime-cyber-security-ship-ip-ltd","category-maritime-cyber-security","category-navigation-alerts","tag-marine-safety-alert"],"_links":{"self":[{"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/posts\/25228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/comments?post=25228"}],"version-history":[{"count":0,"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/posts\/25228\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/media\/25222"}],"wp:attachment":[{"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/media?parent=25228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/categories?post=25228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/developmenttask.com\/ShipIpLtd\/wp-json\/wp\/v2\/tags?post=25228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}