New eco-friendly ferry will soon carry passengers between mainland and Peaks Island The vessel, which will feature a hybrid diesel-battery propulsion system, will replace the aging Machigonne II, built in 1987. Courtesy Elliott Bay Design Group A new climate-friendly ferry will begin transporting Peaks Island residents and visitors between downtown Portland and the island, possibly as soon as next year. The Casco Bay Island Transit District announced Tuesday that its board of directors authorized construction of the passenger/car ferry, which will replace the aging Machigonne II, built in 19...