ABB, Keppel Team Up on Autonomous Tug Operation in Singapore 21 October 2019 ABB signs a contract with Keppel O&M to enable autonomous tug operation at the Port of Singapore in 2020.Author: Capt. Johnhttps://worldmaritimenews.com/archives/285033/abb-keppel-team-up-on-autonomous-tug-operation-in-singapore/