Crowley to Build First Fully Electric Tugboat in US 13 July 2021 The tug, to be named eWolf, will replace a conventional one burning more than 30,000 gallons/year of diesel.Author: Capt. Johnhttp://feedproxy.google.com/~r/shipandbunker/~3/AR2-Nyhi-N0/254095-crowley-to-build-first-fully-electric-tugboat-in-us