Marrying sails and biofuel, Odfjell tanker demonstrates 'first' near carbon-neutral transatlantic voyage

Chemical tanker Bow Olympus is currently crossing the Atlantic powered by a combination of wind-assisted propulsion and a certified sustainable 100% biofuel. The milestone voyage proves how existing technologies and fuels can be paired to accelerate deep-sea shipping’s transition to net-zero emissions, Norwegian shipping company Odfjell said.

Real-time data from the voyage confirms that this dual propulsion approach is not only technically feasible but also impactful: The vessel’s greenhouse gas (GHG) emissions on the current voyage meet the 2050 Fuel EU Maritime GHG intensity targets and IMO’s GFI Direct Compliance targets at least until 2044.

The power of wind-assisted propulsion has been tested through Bow Olympus’ first two cross-Atlantic voyages. The four 22-meter suction sails have been operational under varying weather conditions, with the performance closely monitored by Odfjell’s crew and technology team on board and onshore.

To remind, Spanish company bound4blue completed the installation of the four eSAIL suction sails on the vessel in March 2025.