In this video I show how to tie the figure eight knot. We use this knot to secure the end of a rope. Ad | Buy my Book now: http://sailnator.com/book/ Book Review: https://youtu.be/0nCIUzcjp0M Long Format Video: https://youtu.be/EBlHvvK9OCY Step by step instructions on my blog: http://sailnator.com/figure-eight-knot/

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- Clicca Mostra Altro per leggere la descrizione completa ed i link contenuti nel video. Vieni a trovarci su http://www.giornaledellavela.com - Siamo anche su Facebook https://www.facebook.com/giornaledellavela - E su Instagram https://www.instagram.com/giornaledellavela - Il primo Salone della nautica - Boat Show digitale https://www.milanoyachtingweek.com/ -Descrizione Video In navigazione nel mare del nord sul Saffier 37 Leggi l'articolo https://www.giornaledellavela.com/2019/08/11/provata-saffier-se37-video-e-foto/ Clicca qui per scoprire le formule di abbonamento al Giornale della Vela https://subscribe.giornaledellavela.com/ - DISCLAIMER Il presente video è stato creato a scopo divulgativo. Il Canale Giornale della Vela e gli autori dei video non si assumono alcuna responsabilità circa l'utilizzo del contenuto di questo video. Dal 1974 Panama Editore si occupa del mondo della nautica e del turismo attraverso pubblicazioni cartacee e digitali; siti internet di informazione e servizio; eventi, attività di e-commerce e didattiche. Il Giornale della Vela, la rivista leader di vela in Italia ed il sito www.giornaledellavela.com sono a tua disposizione per trovare informazioni e contenuti aggiornati quotidianamente su crociere, regate, cantieristica, novità del mercato, prove barca. Music Credit - Youtube Free Audio Library

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UK Sailmakers uses very powerful 3-D CAD/CAM software for sail design, which create virtual 3-D molds that can be digitally sliced into two-dimensional panels that when joined back together re-create a full-size version of the designed mold. Thanks to powerful 3-D graphic renderings, designers can see how sail fit around the spreaders and shrouds as well as make sure the clew height and sheeting angles are right. They can also analyze how a main and genoa work together to make sure the boat stays balanced. What we are looking for is a sailplan and sail shapes that put the maximum driving force in precisely the right place to produce a perfectly balanced boat – and with the least amount of drag. Pat Considine, UK Sailmakers’ chief designer, goes a step further and uses Fluid Structural Interaction software, called FSI for short, as a virtual wind tunnel for refining sail designs and sail construction. FSI calculations are used to test proposed designs and cloth choices to make sure they are not built too strong (too heavy) or too weak (too light) for their expected loads. The FSI calculations will predict whether a design and construction will keep its shape properly as the rig bends, halyards are tightened and sheets are trimmed. Shown rotating in this video are two renderings of a Tripp 47 mainsail design. The side-by-side comparison shows the sail with no backstay tension and with max backstay trim. The FSI software allows Pat to rotate the two designs together to study their shape from any angle. In this case, Pat needed to be sure the draft would not move too far aft as the sail was flattened; likewise, he had to make sure the draft was not too far forward when the backstay was eased completely. The FSI program has made extremely accurate predictions of how specific sail designs will perform once made and trimmed in a variety of wind speeds. These tests ensure sails will meet the performance needs right out of the bag.

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