WindHaul Sail Cargo System Completes Transatlantic Trial: 10,000-Ton Cargo Ships Cut Fuel Consumption by 40%

WindHaul Sail Cargo System Completes Transatlantic Trial

On August 28, maritime tech company WindCarrier announced the completion of the first transatlantic commercial trial of its WindHaul sail-assisted cargo system. Four 10,000-ton bulk carriers equipped with WindHaul rigid wing sails departed from Rotterdam, Netherlands, arriving at New York after an 11-day voyage, achieving an average fuel consumption reduction of 40% compared to sister ships without sails.

The WindHaul system consists of three groups of carbon fiber rigid wing sails, each 35 meters tall, mounted on the cargo ship's deck. The sails automatically rotate and adjust their angle of attack based on wind direction, providing additional propulsion in favorable and crosswind conditions. Each sail group generates approximately 150 tons of thrust under ideal wind conditions.

"Sail-assisted propulsion isn't new technology, but WindHaul's innovation lies in the deep integration of meteorological AI routing with sail control systems," said WindCarrier CEO Erik Lindqvist. "The system calculates optimal routes based on 72-hour global weather forecasts, keeping ships in the most wind-rich areas."

Trial data showed WindHaul's utilization rate in the North Atlantic was approximately 65% (meaning sails were actively contributing propulsion for 65% of the voyage), rising above 80% on trade wind routes. At current oil prices, the investment payback period for WindHaul installation is approximately 3 years.

Maersk and MSC have each signed letters of intent with WindCarrier, planning WindHaul retrofits for 20 ships each in 2029. The International Maritime Organization (IMO) stated that sail-assisted propulsion is an important pathway for the shipping industry to achieve its 2050 net-zero emissions target.