Amasus doubles down on bound4blue eSAILs® with second installation on general cargo vessel

• Single eSAIL® installed onboard Fluvius Tavy at Astander Shipyard in streamlined plug-and-play process
• 22-metre unit is the largest suction sail ever fitted to a general cargo vessel
• Installation follows success of previous installation on board Amasus’ Eems Traveller

BARCELONA, 17 DEC 2025 – bound4blue and Amasus Shipping have completed the installation of a 22-metre eSAIL® on the general cargo vessel Fluvius Tavy at Astander Shipyard in Santander, Spain. The project marks the companies’ second installation, reinforcing both the scalability of suction sail technology and the growing confidence of shipowners in wind propulsion as a mainstream decarbonisation solution.

The latest adoption of bound4blue’s autonomous suction sails follows a previous installation on board Amasus’ Eems Traveller, where two 17-metre eSAILs® became the first of their kind to be fitted on a general cargo vessel. Since then, the DNV Type Approved technology has also been retrofitted to vessels operated by other forward-thinking owners such as Odfjell, Louis Dreyfus Armateurs and Eastern Pacific Shipping, with fuel and emissions savings already proven and independently validated in operation.

Trusted formula

“Our collaboration with Amasus continues to demonstrate that wind propulsion is gaining broader acceptance as a practical, profitable, and, crucially, a proven solution for an industry in transition,” comments José Miguel Bermúdez, CEO and Co-founder of bound4blue.

“This installation is particularly noteworthy as it is the largest suction sail ever fitted to a general cargo vessel and, following a previous installation on the Eems Traveller, a very clear endorsement of the value Amasus sees in our technology. We’re delighted to help forward-thinking owners and partners, like Amasus, turn their sustainability ambitions into profitable results.”

Bermúdez adds that the new project is forecasted to “deliver significant double-digit reductions in vessel fuel consumption and CO₂ emissions”.

Easy does it

The retrofit was completed in a single visit to Astander, with all preparatory and installation work carried out within the vessel’s scheduled maintenance period. Structural and electrical adaptations were made to the deck to accommodate the sail’s foundations, after which the fully pre-commissioned unit, manufactured in Spain by Haizea-Tecnoaranda, was lifted into place in a streamlined, plug-and-play process.

Amasus says of the project: “The decision to install a second eSAIL® reflects how satisfied we are with the performance and how smoothly it has integrated into our day-to-day operations. Our experience with bound4blue’s suction sails highlights their suitability for short-sea general cargo vessels like ours. We’re happy to continue working with bound4blue and would like to thank their team, as well as the yard, for another seamless and efficient Amasus installation. We’re now looking forward to seeing the fuel and emissions savings this new installation will deliver.”

Tailored flexibility

bound4blue’s autonomous eSAILs® work by drawing air across an aerodynamically optimised surface to generate lift up to seven times greater than conventional rigid sails of a comparable size. The fully autonomous technology can be easily tailored for individual vessel configurations and a broad range of segments, including tankers, bulk carriers, Ro-Ros, cruise vessels, ferries, and gas carriers, amongst others. Alongside Amasus, other leading shipowners such as Eastern Pacific Shipping, Odfjell or Louis Dreyfus Company, have recently completed installations.

bound4blue 

For media queries contact: T. +34 938 33 73 92 | press@bound4blue.com

About bound4blue 

bound4blue develops automated wind propulsion systems as a turnkey solution for all shipowners and shipping companies seeking to reduce fuel costs and polluting emissions. bound4blue’s eSAIL^® system is a validated solution for saving fuel and emissions, completely autonomous, with low maintenance and easy installation onboard, being the most cost-efficient wind propulsion technology today. It is suitable for Tankers, Bulkers, Ro-Ros, Cruise vessels, Ferries, Gas Carriers, and General Cargo vessels, regardless of their size or age. The company, founded in 2014 with a vocation clearly focused on the renewable energy sector in the maritime field, has its headquarters in Cantabria (Spain) and offices in Barcelona and Singapore. Since completing its first installation in 2021, the company has deployed its eSAIL® system on seven ships, with 12 more in its order book, representing more than 50 eSAILs®. Its growing client portfolio includes industry leaders such as Eastern Pacific Shipping, Maersk Tankers, Odfjell, Klaveness Combination Carriers, BW Epic Kosan and Louis Dreyfus Company, among others.

For more information, visit: www.bound4blue.com

About Amasus Shipping

Amasus is a full-service shipping office, located in the former nautical school and the Abel Tasman National Monument in Delfzijl. Amasus has been engaged in chartering and total ship management for its own fleet of ships, for a large number of shipping companies and captain owners for more than 45 years, having also terminal facilities in Eemshaven and in the port of Delfzijl. Amasus owns and operates ships in the shortsea, bulk, general cargo, offshore and worldwide heavy lift (incl. RoRo) market and, in its vision, the creation of added economic value should be combined with social justice and a healthy living environment. Corporate social responsibility is Amasus´ chosen tool to create a balance between the economic, social and environmental aspects of its corporate policy, and technical innovations play an important role in the company. Amasus is constantly supporting the continuous improvement of navigation, sensoring, monitoring, maintenance, sustainability and prevention of incidents, acting as an initiator, participant and supporter in a number of innovative projects in these areas.

For more information, visit: www.amasus.nl

This project is part of the Spanish Naval Ecosystem PERTE and is funded by the European Union – NextGenerationEU through the Recovery, Transformation and Resilience Plan. Primary project W1NDSAIL as part of the INNCODIS tractor project.