MAN Secures First Ferry Order for its 51/60DF Dual-Fuel Engine 21 May 2019 Jinling Shipyard has ordered four engines for TT-Lines new 230-meter RoPax ferry.Author: Capt. Johnhttps://worldmaritimenews.com/archives/277169/man-secures-first-ferry-order-for-its-51-60df-dual-fuel-engine/