Wartsila’s Roger Holm sees positive signs of cruising return from July 22 April 2021 Marine solutions expert expects gradual ramp up of service activity in second half of 2021Author: Capt. Johnhttps://www.tradewindsnews.com/cruise-and-ferry/wartsilas-roger-holm-sees-positive-signs-of-cruising-return-from-july/2-1-999554