<style id="elementor-post-145764">.elementor-widget-text-editor{font-family:var( --e-global-typography-text-font-family ), Sans-serif;font-weight:var( --e-global-typography-text-font-weight );color:var( --e-global-color-text );}.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:var( --e-global-color-primary );}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap, .elementor-widget-text-editor.elementor-drop-cap-view-default .elementor-drop-cap{color:var( --e-global-color-primary );border-color:var( --e-global-color-primary );}</style>{"id":145764,"date":"2025-04-29T02:37:00","date_gmt":"2025-04-29T01:37:00","guid":{"rendered":"https:\/\/yachtingnews.com\/o-que-sao-os-redans\/"},"modified":"2025-04-29T16:14:36","modified_gmt":"2025-04-29T15:14:36","slug":"o-que-sao-os-redans","status":"publish","type":"post","link":"https:\/\/www.yachtingnews.com\/pt-br\/o-que-sao-os-redans\/","title":{"rendered":"O que s\u00e3o redans? Renato Magazz\u00f9 explica para voc\u00ea"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"145764\" class=\"elementor elementor-145764 elementor-145693\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b386364 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b386364\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-33f9bdf2\" data-id=\"33f9bdf2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2d045971 elementor-widget elementor-widget-text-editor\" data-id=\"2d045971\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\n<p style=\"text-align: center;\"><strong>Renato Magazz\u00f9 explica o que s\u00e3o os redans.<\/strong><\/p>\n\n<p>Renato Magazz\u00f9 \u00e9 uma pessoa extraordin\u00e1ria. N\u00e3o apenas porque ele lidera, ao lado de Claudio e Tina, o que provavelmente \u00e9 o estaleiro mais ic\u00f4nico do segmento Maxi-Rib h\u00e1 anos, mas tamb\u00e9m porque ele \u00e9 um dos engenheiros mais habilidosos e experientes que o setor n\u00e1utico pode ostentar. <\/p>\n\n<p>Uma qualidade preciosa que Renato, modesto e reservado, admite quase com relut\u00e2ncia, temendo que toda essa experi\u00eancia possa ser confundida com arrog\u00e2ncia &#8211; um defeito do qual ele, de fato, est\u00e1 completamente livre.<\/p>\n\n<p>No entanto, para aqueles que, como eu, t\u00eam a sorte de cham\u00e1-lo de amigo, Renato compartilha hist\u00f3rias fascinantes que, impregnadas de hist\u00f3ria, revelam inequivocamente sua imensa estatura no campo da engenharia naval.<\/p>\n\n<p><img decoding=\"async\" class=\"alignleft wp-image-145714\" title=\"renato magazz\u00f9\" src=\"https:\/\/yachtingnews.com\/wp-content\/uploads\/2025\/04\/renato-magazzu-300x300.jpg\" alt=\"renato magazz\u00f9\" width=\"400\" height=\"400\" srcset=\"https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/renato-magazzu-300x300.jpg 300w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/renato-magazzu-150x150.jpg 150w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/renato-magazzu-768x768.jpg 768w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/renato-magazzu.jpg 800w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/>N\u00e3o \u00e9 por acaso que Renato \u00e9 frequentemente chamado para atuar como consultor t\u00e9cnico nas investiga\u00e7\u00f5es judiciais mais importantes do nosso setor, como o recente caso &#8220;Open Arms&#8221;, as investiga\u00e7\u00f5es sobre o naufr\u00e1gio do &#8220;Nuova Iside&#8221; em colabora\u00e7\u00e3o com a equipe forense da RIS e a Guarda Costeira Italiana, ou as investiga\u00e7\u00f5es sobre os inc\u00eandios a bordo do navio Tirrenia &#8220;Vincenzo Florio&#8221;. Ele tamb\u00e9m contribuiu para as investiga\u00e7\u00f5es de v\u00e1rios casos tr\u00e1gicos de naufr\u00e1gios de migrantes no Mediterr\u00e2neo. <\/p>\n\n<p>Mas essas s\u00e3o apenas algumas das investiga\u00e7\u00f5es das quais ele participou como consultor t\u00e9cnico; h\u00e1 muitas outras, e isso n\u00e3o \u00e9 nenhuma surpresa. Renato construiu sua experi\u00eancia j\u00e1 no final dos anos 80, quando, apesar de muito jovem, j\u00e1 trabalhava em testes em tanques de reboque naval e colaborava como engenheiro naval no desenvolvimento de grandes projetos de embarca\u00e7\u00f5es r\u00e1pidas de passageiros. <\/p>\n\n<p>A tudo isso, devemos acrescentar um longo per\u00edodo de pesquisa no setor de hidrof\u00f3lios, envolvendo o estudo e o desenvolvimento de programas espec\u00edficos de c\u00e1lculo de desempenho, perfis de asa, bem como pesquisas sobre hidroavi\u00f5es, seu desempenho e configura\u00e7\u00f5es. Essa experi\u00eancia permitiu que ele aprofundasse muito seu conhecimento espec\u00edfico, especialmente sobre o assunto em que este artigo se concentra: redans. <\/p>\n\n<p>Assim, voc\u00ea pode entender facilmente por que, quando precisei escrever um artigo que explicasse de forma simples o que s\u00e3o os redans, Renato Magazz\u00f9 foi imediatamente a minha primeira escolha &#8211; ele \u00e9 um dos profissionais mais experientes nesse campo.<\/p>\n\n<p><strong>Renato, fala-se muito sobre Redans e seus benef\u00edcios, e voc\u00ea certamente \u00e9 um especialista nessa \u00e1rea. Voc\u00ea pode nos explicar, de forma simples e pr\u00e1tica, o que eles s\u00e3o? <\/strong><\/p>\n\n<p>Redans, ou &#8220;degraus&#8221;, s\u00e3o &#8220;entalhes&#8221; especiais colocados sob o casco que podem ser vistos em alguns barcos de aplainamento de alto desempenho.<\/p>\n\n<p>Essa solu\u00e7\u00e3o foi desenvolvida nas primeiras d\u00e9cadas do s\u00e9culo passado para ser aplicada a hidroavi\u00f5es, em que a necessidade de se desprender bruscamente da \u00e1gua era essencial para reduzir a resist\u00eancia, fazendo assim o melhor uso da pot\u00eancia dispon\u00edvel durante a corrida de decolagem e obtendo a decolagem mais r\u00e1pida e mais curta poss\u00edvel. Outra vantagem para os hidroavi\u00f5es era ter um ponto preciso para realizar a &#8220;rota\u00e7\u00e3o&#8221;, ou seja, a manobra de eleva\u00e7\u00e3o do nariz necess\u00e1ria para a decolagem. <\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-145719 size-full\" title=\"defini\u00e7\u00e3o de redan\" src=\"https:\/\/yachtingnews.com\/wp-content\/uploads\/2025\/04\/redan-definition.jpeg\" alt=\"defini\u00e7\u00e3o de redan\" width=\"1400\" height=\"662\" srcset=\"https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/redan-definition.jpeg 1400w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/redan-definition-300x142.jpeg 300w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/redan-definition-768x363.jpeg 768w\" sizes=\"(max-width: 1400px) 100vw, 1400px\" \/><\/p>\n\n<p><strong>Que efeitos os redans provocam e quais s\u00e3o as vantagens de us\u00e1-los em barcos modernos?<\/strong><\/p>\n\n<p>Atualmente, seu uso em cascos de prancha modernos gera os seguintes efeitos:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>O fundo do casco \u00e9 lubrificado pelo ar aspirado atrav\u00e9s dos &#8220;scoops&#8221; laterais, resultando em uma redu\u00e7\u00e3o substancial do atrito;<\/li>\n\n<li>O barco no modo de aplainamento &#8220;repousa&#8221; em v\u00e1rias superf\u00edcies distintas, o que gera uma melhor &#8220;rela\u00e7\u00e3o de aspecto&#8221; (no sentido aeron\u00e1utico, ou seja, lateralmente em rela\u00e7\u00e3o \u00e0 dire\u00e7\u00e3o do movimento), reduzindo mais uma vez a resist\u00eancia.<\/li>\n<\/ul>\n\n<p>Assim, ambos os efeitos permitem uma maior efici\u00eancia do casco, e um casco equipado com redans se beneficia das seguintes maneiras:<\/p>\n\n<p>1 &#8211; Uma melhoria no desempenho geral, que se traduz implicitamente em uma menor necessidade de pot\u00eancia (e, portanto, menor consumo de combust\u00edvel) em compara\u00e7\u00e3o com um casco tradicional na mesma velocidade de cruzeiro. Isso significa que, para a mesma pot\u00eancia, um casco equipado com redans atinge uma velocidade maior do que um casco sem redans. Na pr\u00e1tica, em nossos modelos, registramos aumentos de at\u00e9 8 n\u00f3s na velocidade m\u00e1xima, especialmente nas faixas de velocidade mais altas e, obviamente, com a mesma configura\u00e7\u00e3o de motor.  <\/p>\n\n<p>2 &#8211; <strong>Manuseio mais f\u00e1cil<\/strong>; gra\u00e7as \u00e0 ado\u00e7\u00e3o de redans, o trim dos barcos equipados com eles \u00e9 determinado exclusivamente pelas respectivas alturas dos degraus no fundo do casco. Assim, n\u00e3o h\u00e1 necessidade (nem \u00e9 vantajoso) usar ajustes de trim, desde as fases de acelera\u00e7\u00e3o at\u00e9 a velocidade m\u00e1xima. Isso ocorre porque a redu\u00e7\u00e3o da \u00e1rea da superf\u00edcie molhada, normalmente obtida com o ajuste da proa para atingir velocidades mais altas, \u00e9 obtida automaticamente por meio do ar que \u00e9 sugado e canalizado ao longo do fundo do casco.  <\/p>\n\n<p>3 &#8211; <strong>Melhor navegabilidade<\/strong>; ao navegar em um barco equipado com redans, os \u00e2ngulos de compensa\u00e7\u00e3o s\u00e3o sempre reduzidos e permanecem independentes da velocidade em que o barco est\u00e1 viajando, pois s\u00e3o determinados pela geometria dos redans e s\u00e3o amortecidos pela presen\u00e7a de ar sob o casco.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-145709 size-full\" title=\"redan em Magazz\u00f9 MX-16\" src=\"https:\/\/yachtingnews.com\/wp-content\/uploads\/2025\/04\/Redan-on-Magazzu-MX-16.jpg\" alt=\"redan em Magazz\u00f9 MX-16\" width=\"1400\" height=\"787\" srcset=\"https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/Redan-on-Magazzu-MX-16.jpg 1400w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/Redan-on-Magazzu-MX-16-300x169.jpg 300w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/Redan-on-Magazzu-MX-16-768x432.jpg 768w\" sizes=\"(max-width: 1400px) 100vw, 1400px\" \/><\/p>\n\n<p><strong>Sem d\u00favida, essas s\u00e3o vantagens interessantes. Ent\u00e3o, seus barcos est\u00e3o equipados com redans? <\/strong><\/p>\n\n<p>\u00c9 claro que sim. Essa configura\u00e7\u00e3o espec\u00edfica foi introduzida em nossos modelos a partir de 2007. Foi uma inova\u00e7\u00e3o importante que tamb\u00e9m nos levou a mudar a nomenclatura de nossos modelos: aqueles equipados com redans s\u00e3o distinguidos pela letra X, como o <a href=\"https:\/\/www.magazzu.com\/en\/gamma-mx\/mx-11-coupe\/\">MX-11<\/a>, <a href=\"https:\/\/yachtingnews.com\/pt-br\/magazzu-mx-12-gran-sport\/\">MX-12<\/a> e assim por diante.  <\/p>\n\n<p>Esse tipo de casco \u00e9, sem d\u00favida, mais eficaz do que os tradicionais e, portanto, essencial para Maxi-Ribs de alto desempenho ou, em geral, para modelos que pertencem a um segmento de mercado de primeira linha, como \u00e9 o nosso caso.<\/p>\n\n<p>Para fazer uma compara\u00e7\u00e3o com o mundo automotivo, seria como se um carro moderno de alto n\u00edvel ou de alto desempenho hoje n\u00e3o fosse equipado com determinadas tecnologias, como ABS ou controle de tra\u00e7\u00e3o.<\/p>\n\n<p>Hoje, s\u00e3o as pr\u00f3prias &#8220;m\u00e1quinas&#8221; que devem atender \u00e0s necessidades do usu\u00e1rio, tornando seu uso mais simples, mais seguro e mais eficiente.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-145694 size-full\" title=\"Magazzu-MX-13-Grand-Coupe\" src=\"https:\/\/yachtingnews.com\/wp-content\/uploads\/2025\/04\/Magazzu-MX-13-Grand-Coupe.jpg\" alt=\"Magazzu-MX-13-Grand-Coupe\" width=\"1400\" height=\"788\" srcset=\"https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/Magazzu-MX-13-Grand-Coupe.jpg 1400w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/Magazzu-MX-13-Grand-Coupe-300x169.jpg 300w, https:\/\/www.yachtingnews.com\/wp-content\/uploads\/2025\/04\/Magazzu-MX-13-Grand-Coupe-768x432.jpg 768w\" sizes=\"(max-width: 1400px) 100vw, 1400px\" \/><\/p>\n\n<p> <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Renato Magazz\u00f9 explica o que s\u00e3o os redans. Renato Magazz\u00f9 \u00e9 uma pessoa extraordin\u00e1ria. N\u00e3o apenas porque ele lidera, ao lado de Claudio e Tina, o que provavelmente \u00e9 o estaleiro mais ic\u00f4nico do segmento Maxi-Rib h\u00e1 anos, mas tamb\u00e9m porque ele \u00e9 um dos engenheiros mais habilidosos e experientes que o setor n\u00e1utico pode [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":145702,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mo_disable_npp":"","footnotes":""},"categories":[2022,1653],"tags":[4000,4001],"class_list":["post-145764","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-como-fazer","category-news-pt-br","tag-redan-pt-br","tag-renato-magazzu-pt-br"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>O que s\u00e3o redans? 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