{"id":12894,"date":"2025-07-09T20:02:42","date_gmt":"2025-07-09T20:02:42","guid":{"rendered":"https:\/\/krogragg.com\/?p=12894"},"modified":"2025-07-09T20:02:42","modified_gmt":"2025-07-09T20:02:42","slug":"eco-boss-cap-propeller-hub-now-in-production","status":"publish","type":"post","link":"https:\/\/krogragg.com\/?p=12894","title":{"rendered":"Eco Boss Cap propeller hub now in production"},"content":{"rendered":"<p>    Eco Boss Cap propeller hub now in production<br \/>\n \t<BR><br \/>\n<BR><\/BR><br \/>\n    <!-- no image --><br \/>\n \t<BR><br \/>\n<BR><\/BR><\/p>\n<div>\n<p>EcoNavis Solutions, a spin-off from the University of Strathclyde in Scotland has begun production of its patented Eco Boss Cap propeller hub, marking the transformation of a university-led research project into an industry-ready fuel efficiency retrofit technology.<\/p>\n<p>The Eco Boss Cap is designed to eliminate the hub vortex cavitation that causes rudder erosion, vibration, and thrust loss in conventional propulsion systems.<\/p>\n<figure class=\"wp-block-embed alignleft is-type-wp-embed is-provider-marine-log wp-block-embed-marine-log\">\n<div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"HmpmzEFczi\"><p><a href=\"https:\/\/www.marinelog.com\/technology\/video-new-propeller-boss-cap-promises-major-efficiency-gains\/\">VIDEO: New propeller boss cap promises major efficiency gains<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" title=\"\u201cVIDEO: New propeller boss cap promises major efficiency gains\u201d \u2014 Marine Log\" src=\"https:\/\/www.marinelog.com\/technology\/video-new-propeller-boss-cap-promises-major-efficiency-gains\/embed\/#?secret=6e5iivKIQv#?secret=HmpmzEFczi\" data-secret=\"HmpmzEFczi\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div>\n<\/figure>\n<p>Unlike finned boss caps, which only function optimally at narrow speed ranges, the Eco Boss Cap features a smooth, conical design with internal chambers and strategically bored holes. This configuration uses fluid pressure differences to improve flow uniformity, reducing torque while increasing thrust across a wide range of operating conditions.<\/p>\n<p>The holes led to the solution being called the<a href=\"https:\/\/www.marinelog.com\/technology\/video-new-propeller-boss-cap-promises-major-efficiency-gains\/\"> \u201choly boss cap\u201d <\/a>when it was first introduced.<\/p>\n<p>The first unit, destined for installation on a general cargo vessel, has been cast at a foundry in China using designs optimized entirely through computational fluid dynamics (CFD). It is currently undergoing final machining ahead of a factory acceptance tests later this month (July).<\/p>\n<p>EcoNavis worked with a U.K.-based propeller manufacturer to develop manufacturing drawings and specifications but will manage all client relationships directly.<\/p>\n<p>The innovation began as a research project at the University of Strathclyde, led by naval architect Dr Batuhan Aktas.<\/p>\n<p>\u201cWe started by identifying the failure points of existing designs,\u201d he said. \u201cFin-type caps tend to generate drag outside their designed speed. We wanted to create something simpler and smarter; a passive system that could dynamically adapt without complexity or cost.\u201d<\/p>\n<p>Initial CFD simulations showed performance gains of over 3% in efficiency and reduction in propeller hub vortex cavitation. But early prototypes revealed a critical problem: some hole placements actually reduced propeller efficiency. The team returned to first principles, iterating the design using advanced parametric optimization tools.<\/p>\n<p>The breakthrough came when engineers redesigned the internal chamber to align the suction flow with stagnation pressure points, allowing the cap to draw water through its core without impeding thrust.<\/p>\n<p>These insights led to successful trials at a European cavitation tunnel facility, where the final design outperformed other energy-saving caps. Validation complete, EcoNavis fast-tracked the product to market.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img data-recalc-dims=\"1\" fetchpriority=\"high\" decoding=\"async\" width=\"350\" height=\"263\" src=\"https:\/\/i0.wp.com\/www.marinelog.com\/wp-content\/uploads\/2025\/07\/foundryPicture2_1.jpg?resize=350%2C263&#038;ssl=1\" alt=\"Ecp Boss Cap\" class=\"wp-image-101854\" srcset=\"https:\/\/www.marinelog.com\/wp-content\/uploads\/2025\/07\/foundryPicture2_1.jpg 350w, https:\/\/www.marinelog.com\/wp-content\/uploads\/2025\/07\/foundryPicture2_1-300x225.jpg 300w, https:\/\/www.marinelog.com\/wp-content\/uploads\/2025\/07\/foundryPicture2_1-209x157.jpg 209w, https:\/\/www.marinelog.com\/wp-content\/uploads\/2025\/07\/foundryPicture2_1-320x240.jpg 320w\" sizes=\"(max-width: 350px) 100vw, 350px\"><figcaption class=\"wp-element-caption\">Photo: EcoNavis<\/figcaption><\/figure>\n<\/div>\n<p>Now under exclusive licence from the University of Strathclyde, the Eco Boss Cap is cast in a single piece, requires no moving parts, and can be installed in five to six hours during a normal drydocking.<\/p>\n<p>\u201cIt costs about 50% less to manufacture than typical fin-based units and is expected to achieve a return on investment (ROI), in under six months for mid-sized vessels,\u201d said Amitava Wye, <a href=\"https:\/\/econavis.co.uk\/\">EcoNavis\u2019<\/a>s chief operating officer. \u201cWhat we\u2019ve created isn\u2019t just another retrofit solution with bold efficiency claims, but rather a scalable propeller technology proven to reduce fuel costs across a broad speed range. This is not a generic boss cap.\u201d<\/p>\n<p>Early trials showed a 3.1% improvement in propeller efficiency, a 1.1% increase in thrust, a 2% reduction in torque, and a 10% decrease in rudder cavitation. Noise was also reduced by up to 3dB, lowering the vessel\u2019s underwater radiated noise footprint \u2013 a key issue for ESG compliance in sensitive marine environments.<\/p>\n<p>The company recently closed a \u00a3550,000 funding round, secured a contract with a Thailand-based ship management company, and is preparing distribution partnerships in Greece and the U.S. The first Eco Boss Cap is in production, with follow-on orders under discussion.<\/p>\n<p>\u201cWe\u2019ve moved from lab to foundry in less than a year,\u201d said Dr Aktas. \u201cAnd with every unit, we\u2019re refining not just our technology, but how fast and affordably we can deliver it.\u201do Boss Cap propeller hub enters production<\/p>\n<p>The post <a href=\"https:\/\/www.marinelog.com\/technology\/eco-boss-cap-propeller-hub-now-in-production\/\">Eco Boss Cap propeller hub now in production<\/a> appeared first on <a href=\"https:\/\/www.marinelog.com\/\">Marine Log<\/a>.<\/p>\n<\/div>\n<p> \t<BR><br \/>\n <BR><\/BR><br \/>\n    Nick Blenkey<br \/>\n \t<BR><br \/>\n<BR><\/BR><br \/>\n<a href=\"https:\/\/www.marinelog.com\/technology\/eco-boss-cap-propeller-hub-now-in-production\/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=eco-boss-cap-propeller-hub-now-in-production\">Go to marinelog<\/a><br \/>\n \t<BR><br \/>\n <BR><\/BR><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Eco Boss Cap propeller hub now in production EcoNavis Solutions, a spin-off from the University of Strathclyde in Scotland has begun production of its patented Eco Boss Cap propeller hub, marking the transformation of a university-led research project into an industry-ready fuel efficiency retrofit technology. The Eco Boss Cap is designed to eliminate the hub [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5213,5214,5215,192,199,5216,5217,606],"tags":[193],"class_list":["post-12894","post","type-post","status-publish","format-standard","hentry","category-eco-boss-cap","category-econavis","category-holy-boss-cap","category-marinelog","category-news","category-proeller-boss-cap","category-propeller-efficiency","category-technology","tag-marinelog"],"_links":{"self":[{"href":"https:\/\/krogragg.com\/index.php?rest_route=\/wp\/v2\/posts\/12894"}],"collection":[{"href":"https:\/\/krogragg.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/krogragg.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/krogragg.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/krogragg.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12894"}],"version-history":[{"count":0,"href":"https:\/\/krogragg.com\/index.php?rest_route=\/wp\/v2\/posts\/12894\/revisions"}],"wp:attachment":[{"href":"https:\/\/krogragg.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/krogragg.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/krogragg.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}