In this episode, we dive into the escalating electronic-warfare environment in critical maritime chokepoints like the Strait of Hormuz. With maritime intelligence reporting over 1,700 GNSS interference events in early 2026 alone, relying solely on satellite navigation is no longer a safe operational baseline.

We break down the critical differences between GNSS jamming (a denial-of-service attack resulting in a loss of position) and GPS spoofing (the broadcasting of hazardously misleading information that tricks your receiver). When satellite integrity is compromised, it is rarely just a navigation issue, it triggers a "digital cascade" across the Integrated Bridge System, simultaneously corrupting ECDIS, AIS, GMDSS, and Voyage Data Recorders.

Key Topics Discussed:

• The tactical reality of navigating the Gulf and Strait of Hormuz under GNSS denial.
• How to detect "carry-off spoofing," where your vessel's reported position drifts gradually without triggering immediate system alarms.
• Understanding the bridge alarm cascade and overcoming alarm fatigue.
• Actionable countermeasures: Reverting to Dead Reckoning (DR), Estimated Position (EP), and using radar interlay to spot coastline mismatches.
• Building navigational resilience through traditional seamanship, independent sensor cross-checking, and Echo Reference (ER) modes.
• Guidance for reporting disruptions to authorities like the NATO Shipping Centre and US Coast Guard NAVCEN.

Resilience isn't just about technology; it's about the discipline of the bridge team. Tune in to learn how to maintain command of your vessel when the "blue dot" on your ECDIS can no longer be trusted.Read the full analysis by Capt. Raghu Sharma on The DeepDraft: 🔗 https://thedeepdraft.com/2026/03/16/gnss-interference-at-sea-navigating-gps-spoofing-in-the-strait-of-hormuz/