{"id":2319,"date":"2023-03-10T17:44:02","date_gmt":"2023-03-10T17:44:02","guid":{"rendered":"https:\/\/horizon.peachpuff-wolverine-566518.hostingersite.com\/?p=2319"},"modified":"2023-03-10T17:44:02","modified_gmt":"2023-03-10T17:44:02","slug":"ships-harness-wind-for-voyage-to-a-cleaner-future","status":"publish","type":"post","link":"https:\/\/scienceblog.com\/horizon\/2319\/ships-harness-wind-for-voyage-to-a-cleaner-future\/","title":{"rendered":"Ships harness wind for voyage to a cleaner future"},"content":{"rendered":"

New sails and boat designs are set to help shipowners slash fuel costs and emissions.<\/p>\n

By Gareth Willmer<\/p>\n

There is no mistaking Cristina Aleixendri\u2019s enthusiasm \u2013 and competence \u2013 when it comes to talking about how wind-assisted shipping is on the verge of making a planet-changing comeback.<\/p>\n

Aleixendri founded a company called\u00a0bound4blue<\/a>\u00a0with two fellow Spaniards in 2014 to develop sail technology inspired by their training in aeronautical engineering.<\/p>\n

Dream come true<\/strong><\/p>\n

\u2018When we started, we were seen as crazy engineers for wanting to bring sails back to ships,\u2019 she said. \u2018But when we speak to shipowners today, they tell us we\u2019ll go back to wind and it will never be abandoned.\u2019<\/p>\n

It\u2019s easy to understand why. The shipping industry accounts for about 3% of global greenhouse-gas emissions and is trying to move away from heavy fuel oil, which is highly polluting.<\/p>\n

\u2018Wind-propulsion technology will become a standard,\u2019 said Aleixendri. \u2018It started as a dream of mine. Now, I see it less as a dream and more of a reality.\u2019<\/p>\n

Not only has Barcelona-based bound4blue attracted growing interest from shipping firms in its wind-assisted propulsion system but Aleixendri has achieved significant personal recognition for her efforts.<\/p>\n

In 2019, she made the Forbes 30 Under 30 list<\/a> for manufacturing and industry in Europe. The following year,\u00a0Aleixendri won the\u00a0European Institute of Innovation and Technology Woman Award<\/a>\u00a0recognising inspiring female entrepreneurs.<\/p>\n

Wind in the sails<\/strong><\/p>\n

Now, bound4blue is coordinating an EU-funded sails project that borrows the company\u2019s name and runs for two years through February 2024. There\u2019s big room for growth in wind-assisted shipping.<\/p>\n

As of September 2022, only 21 large commercial ships globally were equipped with the ability to harness wind energy, according to the International Windship Association<\/a>. Though predicted to more than double to as many as 50 vessels this year, that\u2019s still a drop in the ocean compared with the global fleet.<\/p>\n

Wind energy is viable for a variety of vessels, including cargo carriers, tankers, ferries and cruise ships, according to Aleixendri.<\/p>\n

\u2018It\u2019s a massive market because there are more than 60 000 ships sailing worldwide that could benefit from such solutions,\u2019 she said. \u2018This is very nascent.\u2019<\/p>\n

As 2023 dawned, the entry into force of new regulations by the International Maritime Organization<\/a> on energy efficiency and carbon emissions\u00a0is also expected to spur growth.<\/p>\n

\u2018I think it\u2019s the right moment to invest in wind propulsion \u2013 it\u2019s a very sweet spot for us,\u2019 said Aleixendri, who is her company\u2019s chief operating officer and earned a Master of Sciences degree in aerospace engineering from the Polytechnic University of Catalonia.<\/p>\n

Suction fan<\/strong><\/p>\n

Bound4blue has developed what\u2019s called an autonomous suction-based sail, which looks nothing like a traditional one. It has the appearance of a cylinder-shaped tower that rises from the ship\u2019s deck.<\/p>\n

Traditional sails work by \u2018\u2018catching the wind\u2019\u2019. The wind creates a higher-pressure area behind the sail compared to its other side. This difference in pressure generates a force that propels the ship forward, known as \u201clift\u201d.<\/p>\n

By contrast, bound4blue’s \u2018\u2018eSAIL\u2019\u2019 contains a suction fan to draw air inside the tower as wind flows around it, creating stronger lift to power the boat.<\/p>\n

This results in six or seven times the lift of a conventional rigid sail and could reduce fuel consumption by up to 40% if combined with better vessel design and adjustments in routes to take advantage of prevailing winds, according to Aleixendri.<\/p>\n

The eSAIL is best suited for the types of windy conditions found in the North Atlantic and North Pacific, she said \u2013 though its use is by no means exclusive to those routes.<\/p>\n

Emission savings will vary, depending on the general wind conditions on different routes. For example, bound4blue estimates that a merchant ship sailing the 25 000 kilometres from southern Brazil to north-eastern China could save 26% on fuel and emissions.<\/p>\n

While it\u2019s still early days, some first movers have already reported savings of 15%. Bound4blue has also signed a range of deals with shipping firms including Japan\u2019s Marubeni and French-owned Louis Dreyfus Armateurs.<\/p>\n

\u2018We have more demand than we can supply today, so we\u2019re very happy about how it\u2019s going,\u2019 said Aleixendri.<\/p>\n

While new technology has previously been seen as risky to install on ships, wind-assisted options like bound4blue\u2019s are starting to make economic sense and can pay for themselves in fuel savings within five years, she said.<\/p>\n

\u2018In the end, wind propulsion is providing free, renewable energy that you don\u2019t have to store or invest in infrastructure to supply,\u2019 said Aleixendri.<\/p>\n

Vessel design<\/strong><\/p>\n

Amid the promise of wind-based options, a challenge arises: ensuring they are properly implemented to achieve their full performance potential or preventing negative knock-on effects on how a ship runs.<\/p>\n

So another EU-funded project, OPTIWISE<\/a>, is investigating how the overall design of vessels can be adjusted to optimise wind-assisted propulsion.<\/p>\n

Better attuning ships to the technology can help improve sailing efficiency and emission savings, according to Rogier Eggers, who leads the three-year project running through May 2025.<\/p>\n

Design modifications could also help overcome some of the potential negative consequences of installing sails on ships. Doing so may, for instance, create an obstacle for passing under objects like cranes in ports or even affect ships in such a way that they struggle to stay on course.<\/p>\n

\u2018That\u2019s simply not acceptable, so it\u2019s required to look at the shape of the hull and appendages such as rudders to make sure that you get the ship in balance,\u2019 said Eggers, a senior project manager at Dutch maritime research institute MARIN.<\/p>\n

Over the next couple of years, OPTIWISE plans to use scale models of ships several metres in length to test wind systems and the effects of technological improvements in various sea conditions. The project also intends to employ computer-based voyage simulations and machine learning.<\/p>\n

Innovations could deliver savings of well over 30% in carbon emissions,\u00a0maybe even reaching as much as 50%,\u00a0if effectively delivered, according to Eggers.<\/p>\n

Blast from the past<\/strong><\/p>\n

If wind technologies can be successfully integrated, methods like suction sails, wing sails and cylindrical spinning rotor sails being produced by partners in OPTIWISE could gain real traction, he said.<\/p>\n

Adoption of such rotor sails would resurrect a wind-based technology invented a century ago by Anton Flettner, a German engineer. It failed to become widely adopted as a result of the growing popularity of diesel fuel at the time.<\/p>\n

\u2018Several suppliers have been pretty active with wind technology and have been getting increased interest from the shipping market for installations,\u2019 said Eggers. \u2018Before, there was a big reluctance to put such things on ships, but devices like Flettner rotors, suction sails and wing sails are now gradually being trusted by the industry.\u2019<\/p>\n

This transition promises to set the maritime sector on a course towards slashing emissions.<\/p>\n

\u2018We are at the start with shipping in moving towards a zero-emission future,\u2019 said Eggers. \u2018The number of ships equipped now with wind propulsion is still tiny compared to the world fleet, but the hope is that we will soon be seeing hundreds of ships being equipped per year.\u2019<\/p>\n

The article was originally published\u202fin <\/em>Horizon<\/em><\/a>, the EU Research and Innovation Magazine.\u00a0<\/em><\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

New sails and boat designs are set to help shipowners slash fuel costs and emissions. By Gareth Willmer There is no mistaking Cristina Aleixendri\u2019s enthusiasm \u2013 and competence \u2013 when it comes to talking about how wind-assisted shipping is on the verge of making a planet-changing comeback. Aleixendri founded a company called\u00a0bound4blue\u00a0with two fellow Spaniards … Read more<\/a><\/p>\n","protected":false},"author":298,"featured_media":2320,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"generate_page_header":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[11,408],"tags":[],"class_list":["post-2319","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earth-energy-environment","category-transport"],"yoast_head":"\nShips harness wind for voyage to a cleaner future - Horizon Magazine Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scienceblog.com\/horizon\/2319\/ships-harness-wind-for-voyage-to-a-cleaner-future\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ships harness wind for voyage to a cleaner future\" \/>\n<meta property=\"og:description\" content=\"New sails and boat designs are set to help shipowners slash fuel costs and emissions. 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