AIS Safety vs Internet AIS: The Critical Difference Sailors Miss

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AIS is one of today’s best safety tools—and one of the most misunderstood. AIS targets on your chartplotter aren’t the same as the ones in phone apps, and that difference matters. In this article, I break down how AIS really works, why some targets vanish, how vessels end up online, and the key distinction between AIS as an onboard safety system vs. an internet tracking tool.

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What is an American National Standards EDU-4 Instructor

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EDU-4 is the American National Standard that describes what high-quality on-water instruction must look like: clear objectives, structured lessons, appropriate safety and student ratios, objective assessment, and continuous improvement. NauticEd requires its instructors to follow these principles in every training session.

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Fin Keel versus a Full Keel Efficiency

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Basic Newtonian physics says keel force scales with water density, area, and velocity squared. So if a fin keel and full keel had the same area, shouldn’t they perform the same? And since full keels often have more area, it seems like they should do better—not worse.

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How to Dock a Catamaran on a T-Head (Complete Guide)

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Docking a catamaran on a T-head doesn’t have to be stressful. In this step-by-step video + transcript, Grant Headifen demonstrates five real-world approaches—45° drive-in, ferry-glide (crab), tailwind back-in, wind-on, and wind-off—showing throttle work, line order, and pro tips for clean, controlled landings.

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