Oceanbird

Oceanbird is the trading name of Alfawall Oceanbird AB, a company providing Wind Propulsion technologies to cargo ships. Oceanbird is a Swedish based company and a joint venture between Wallenius Lines and Alfa Laval.

Oceanbird began as a concept for wind-powered cargo vessels under development by Wallenius Marine. The concept aims to lower emissions by up to 90 percent and the design was developed in collaboration with KTH Royal Institute of Technology and Swedish maritime technology company SSPA. Financial backing for the development was provided by the Swedish Transport Administration. In 2021, Wallenius announced a partnership with Swedish heavy industry company Alfa Laval to further develop the concept's wing sail design. Construction of a full-scale prototype wing was commenced in 2023, to be installed ashore at Landskrona to test the concept and to develop the crew operation and automation aspects. Meanwhile, Wallenius Wilhelmsen's car carrier Tirranna has been prepared to receive the second prototype wing, which is planned to be fitted in early 2026.The early concept features expandable wing sails that can rotate 360 degrees and tilt down if needed and use an auxiliary engine to navigate harbors and provide emergency power. Later concepts showed a two part wing with a flap to create camber and the ability to fold in for stowing. thumb|The later RoRo concept with rigid wing sails While the design is meant to be usable for different types of ships and even retrofitted to existing vessels, the first vessel from the Oceanbird concept is planned to be a long roll-on/roll-off ship with a capacity of up to 7,000 cars. Such ships are optimized for transatlantic routes.