Leon Schulz, Reginasailing · vídeo

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Leon Schulz, who has sailed over 80,000 miles, argues that GPS jamming and spoofing in conflict zones — Ukraine and the Israeli conflict are cited — make satellite navigation unreliable enough to justify carrying a sextant on every offshore passage.Watch A single software failure at one company grounded thousands of planes across the United States in July, illustrating how dependence on external systems creates systemic risk.0:49 Schulz's position is that personal safety cannot rest on software or satellites, and a sextant requires neither.1:00 The technique involves measuring angles to the Sun, Moon, or planets and deriving a position from those observations alone — a method sailors have used for hundreds of years.1:26 Schulz adds that celestial navigation is not as difficult as its reputation suggests and that mastering it marks a sailor as genuinely competent.1:44 The practical case is straightforward: a sextant works when GPS is jammed, spoofed, or simply unavailable.0:30

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