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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