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#airflow #lift #foil shape #wind energy #sail shape #fluid dynamics

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#sail shape #synapsid #prehistoric animal #pelycosaur #permian reptile

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#tortilla chip #triangular food #snack shape #sail shape #nacho

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#lateen sail #triangular sail #sail shape #boat design #mediterranean sail #rigging

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#mainsail #mast #boom #sail shape #sailboat parts #rigging #sail diagram #principal sail