The partnership between bound4blue and CryoSafe Services provides a strategic framework for the LNG bunkering and transport sector to adopt wind-assisted propulsion without compromising terminal safety or cargo operations. By validating eSAIL® technology against rigorous gas-carrier standards, including airdraft and mooring requirements, the alliance offers a pragmatic pathway for owners to lower carbon intensity and capture “wind rewards” under FuelEU Maritime.
Barcelona | May 14, 2026 – In a strategic move to accelerate wind-assisted propulsion within the specialized gas tanker market, bound4blue has signed a milestone partnership agreement with CryoSafe Services. The alliance is designed to bridge the gap between cutting-edge suction sail technology and the stringent operational realities of LNG carriers, ensuring that wind power can be integrated without compromising terminal safety or cargo logistics.
As the maritime industry faces an intensifying regulatory squeeze from the EU ETS and FuelEU Maritime, the partnership offers a verified technical roadmap for shipowners to deploy bound4blue’s eSAIL® system while maintaining full compliance with LNG terminals and Floating Storage Regasification Units (FSRUs).
Navigating Technical Complexity: The LNG Challenge
Integrating large-scale wind propulsion systems on LNG carriers involves more than just bolting hardware to the deck. The unique operational profile of these vessels requires a granular assessment of factors that do not typically affect bulkers or tankers.
Under the new agreement, CryoSafe Services will leverage its deep consultancy expertise to evaluate eSAIL® applications across several critical dimensions:
- Vessel Airdraft: Ensuring sails do not interfere with bridge visibility or terminal height restrictions.
- Cargo & Terminal Operations: Managing the footprint of sails to ensure zero interference with loading arms, gangway entries, and manifold access.
- Mooring & Stability: Assessing how wind loads affect mooring lines and station-keeping during sensitive ship-to-ship (STS) transfers.
- Non-Explosion Proof Safety: Utilizing bound4blue’s specialized technology which allows for simple, cost-effective installation that meets the rigorous safety standards of gas carriers without requiring complex explosion-proof modifications.
The Strategic Value of eSAIL® Technology
The DNV Type Approved eSAIL® system utilizes a suction mechanism to drag air across an aerodynamic surface. This generates lift up to seven times greater than traditional rigid sails of a comparable size. For the LNG sector, this efficiency is a game-changer.
“The LNG Carrier market is a key growth area for bound4blue,” says Daniel Mann, CCO at bound4blue. “By combining our wind propulsion knowledge with CryoSafe’s expertise in LNG operations, owners can be confident that all critical considerations—from terminal compliance to operational integrity—have been addressed. With our existing relationship with GTT, we now offer an even stronger value proposition for this segment.”
Regulatory Windfalls: FuelEU and the “Wind Reward”
For LNG operators, the adoption of eSAIL® is increasingly a matter of financial logic. Beyond fuel savings, wind propulsion provides a significant “reward factor” under FuelEU Maritime and helps lower the Carbon Intensity Indicator (CII) ratings.
The partnership comes on the heels of major momentum for bound4blue, which has recently secured installations with industry titans including Odfjell, Eastern Pacific Shipping (EPS), and Maersk Tankers.
Grant Wintle, COO at CryoSafe Services, emphasized the importance of operational experience in this transition: “Our team has sailed on these vessels and worked closely with owners on LNG operations. We are committed to supporting proven technology like the eSAIL®, which offers considerable value for these vessels. We look forward to conducting the studies that will determine the most optimized configurations for the next generation of gas carriers.”
About the Companies
CryoSafe Services
The Gas Specialists Established in 2021, CryoSafe Services provides expert consultancy, training, and operational support for the LNG, ammonia, and hydrogen sectors. Specializing in ship-to-ship (STS) transfers and terminal management, they are the go-to partner for ensuring safety and efficiency in the global gas supply chain.
bound4blue
Leading the Wind Revolution Founded in 2014, bound4blue is a pioneer in automated wind-assisted propulsion. Its eSAIL® system is a turnkey, low-maintenance solution designed to slash fuel costs and emissions. With headquarters in Cantabria and offices in Barcelona and Singapore, the company has deployed its technology on 11 ships to date, with an order book exceeding 50 eSAILs®.
Source: bound4blue