Boomsma Shipping has installed its first two eConowind VentiFoil wind-assisted propulsion units. The companies worked closely to manage the installation during a port call in Harlingen. The Dutch-flagged MV Frisian Sea, a 6,477-dwt general cargo vessel, has made its maiden voyage to Vasteras, Sweden, with the VentiFoils in operation, during which eConowind has been conducting start-up tests. The VentiFoils by