Wärtsilä to Carry Out World’s 1st Hybrid Retrofit for Short Sea Vessel 8 February 2019 Wärtsilä inks an agreement with Hagland Shipping for a hybrid retrofit installation onboard general cargo vessel. Author: Capt. Johnhttps://worldmaritimenews.com/archives/271021/wartsila-to-carry-out-worlds-1st-hybrid-retrofit-for-short-sea-vessel/