Plongée du 19 août 2018 au Banc de l'Iris. Première de la saison après le passage des alizés. Avant d'arriver sur site : une baleine et son baleineau Puis après 30 minutes d'immersion sans rien voir... un premier banc de requins marteaux, suivi d'un second puis d'une troisième. --------------------------------------------------------------------- Musique proposée par La Musique Libre Sappheiros - Smile : https://youtu.be/MazeGiWQ1vw Sappheiros : https://soundcloud.com/sappheirosmusic ---------------------------------------------------------------------

0

0

0

1,120

Sailing Nations: America's Cup 2024 #sailing #boat #shorts

0

0

0

461

0

0

0

0

1,367

The ACCWing is essentially a twin-skinned sail that can be raised or lowered. It’s fully battened, can be reefed, and can change its section shape using its own internal muscles, operated by compressed air. It achieves this with ‘muscles’ fitted at various positions up the sail on the inside of the wing. The muscles consist of a braided line around flexible hoses, one on each side of the wing. When the hose contracts on one side, it pulls the sail into shape, creating a deeper camber. Having muscles in different positions up along the sail means the section shape can change with height, allowing the twist to be controlled and developing a smooth transition from top to bottom. The rotation of the masts changes the sail’s angle of attack. When it comes to sheet loads, wingsails are often light. This is thanks to the sail’s balancing effect ahead of the mast, much like the equilibrium on a spade rudder. It’s easy to imagine how this system could be totally automated to respond to wind speed and direction, both in section shape and with automated reefing. While you might turn your nose up at letting a computer and servos take over the boat, there will surely be shipping companies that’ll sit up and take note. Since the clipper ships went out of fashion, there’s never been a need for them to put muscles and sails in the same sentence. Until now. ► Become a FREE SUBSCRIBER to Yachting World's YouTube page now - https://www.youtube.com/user/yachtingworld?sub_confirmation=1 ► For the latest reviews, new gear launches and tour news, visit our website: http://www.yachtingworld.com ► Like us on Facebook here - https://www.facebook.com/yachtingworldmagazine ► Follow us on Twitter at: https://twitter.com/yachtingworld ► Feel free to comment below! ► Remember to hit that LIKE button if you enjoyed it :)

0

0

0

1,586

Cruise with the Tullio Abbate 46 from Taormina to the Ciclopi Islands

0

0

0

72

An amazing sighting from the Freebird One, a humpback whale (Megaptera novaeangliae), which was beating its fins against the water, probably as a way of communicating with other whales. The humpback whales measure 16m and weigh 36 Tons. Impresionante avistamiento desde el Freebird One, una ballena jorobada, también conocida como ballena yubarta (Megaptera novaeangliae), que estaba golpeando sus aletas contra el agua, probablemente como una forma de comunicación con otras ballenas. Las ballenas jorobadas llegan a medir 16m y pesar 36 Toneladas.

0

0

0

163