Turkish shipbuilder Sanmar Marine announced the recent delivery of the Robert Allan Ltd. designed FiFi1 escort tug Bison to Norwegian owner Buksér og Berging AS. In essence, Bison is a RAstar 2800/80 escort/terminal ASD tug measuring 28.2m x 12.6m and the ninth of this class to be built by Sanmar. Standard on this model is a sponsoned hull form, which enhances escorting stability. However, a number of improvements have also been made to enhance performance. A bollard pull of 80…