Maritime Bulk Carriers
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bound4blue Completes Suction Sail Retrofit on Marflet Marine Vessel

Marflet Marine has become the first Spanish merchant fleet operator to adopt suction sails following the installation of four bound4blue eSAIL units aboard the Santiago I.

· Published 04 Sept 2026, 14:06 UTCAI-assisted, editor-reviewed
bound4blue Completes Suction Sail Retrofit on Marflet Marine Vessel
Illustrative image generated for editorial use. — Illustration: Maritime Bulk Carriers (AI-generated)

Wind propulsion specialist bound4blue has completed the installation of four 22-metre eSAIL suction sails aboard the 49,999-dwt vessel Santiago I, managed by Marflet Marine. The milestone establishes Marflet Marine as the first Spanish merchant fleet owner to deploy wind-assisted propulsion systems utilizing suction sail technology.

The installation phase concluded at EDR Antwerp Shipyard in Belgium. This followed initial "wind ready" preparatory engineering works conducted at IMC Shipyard in Zhoushan, China, setting up the vessel's deck infrastructure for the retrofit.

The suction sail system uses aerodynamic technology to generate auxiliary propulsive thrust from wind, providing supplementary power to reduce overall fuel consumption and vessel emissions during transit.

The delivery on the Santiago I represents a key commercial deployment for bound4blue as shipowners across the international commercial shipping sector continue to evaluate mechanical wind-assisted propulsion systems to improve vessel energy efficiency.

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