Bound4blue and Cryosafe Join Forces to Bring Wind Propulsion to LNG Carriers

Two specialist maritime firms have taken a significant step toward integrating wind-assisted propulsion technology into the LNG shipping sector, signing a formal partnership agreement to explore the practical challenges of deploying sail systems aboard gas carriers.

Wind propulsion technology firm Bound4blue and LNG consultancy specialist Cryosafe Services have agreed to work together on integrating Bound4blue’s eSAIL system into LNG carrier designs, according to a statement from Bound4blue published on Thursday.

What the Partnership Covers

According to Bound4blue, the two companies will jointly assess the feasibility of eSAIL installations aboard LNG carriers, with evaluations covering a range of operational and structural considerations. These include air draft constraints, cargo handling operations, gangway access, and mooring arrangements — all factors that present unique challenges on vessels of this type.

The partnership will also examine compliance requirements specific to LNG infrastructure, including compatibility with LNG terminals and floating storage and regasification units (FSRUs), as reported by Ship & Bunker.

eSAIL Technology and Regulatory Context

Bound4blue’s eSAIL system has received DNV type approval, and the company states it can contribute to reducing bunker fuel consumption and greenhouse gas emissions. The technology is positioned to support shipowners in meeting a growing range of regulatory requirements, including the EU Emissions Trading System (EU ETS), the Carbon Intensity Indicator (CII) framework, and FuelEU Maritime regulations.

Wind-assisted propulsion has gained considerable momentum across the shipping industry as operators look for cost-effective ways to reduce fuel use and demonstrate emissions progress without committing to a single alternative fuel pathway.

Growing Adoption Across Sectors

The eSAIL system is not new to commercial deployment. According to Ship & Bunker, recent installations have been completed for Odfjell, Eastern Pacific Shipping, and Maersk Tankers — reflecting growing interest from tanker operators in wind propulsion as a viable efficiency measure.

The expansion into LNG carriers marks a further step in the technology’s reach across different vessel segments. The GTT 200,000 m³ LNG carrier concept, which features an integrated eSAIL layout, has been highlighted by Bound4blue as part of this broader push into gas shipping.


Gulf Bunkering does not provide operational or security guidance. This article is for informational purposes only. Operators should consult flag state authorities, P&I clubs, and relevant advisories for decisions relating to transit planning.

Sources: Ship & Bunker

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