https://gcaptain.com/ulstein-to-design-x-bow-ocean-going-tugs/
Ulstein to Design 300T Bollard Pull Ocean-Going Tugs
Mar 31, 2014 - Norwegian shipbuilder Ulstein Group announced its entry into the long-haul ocean towing segment with a design and equipment package contract for four 300 ton...
bollard pullulsteindesignoceangoing
https://www.rolls-royce.com/media/press-releases/2021/04-11-2021-rolls-royce-to-supply-mtu-engines-for-80-ton-bollard-pull-tugboats-in-brazil.aspx
Rolls-Royce to supply mtu engines for 80-ton bollard pull tugboats in Brazil | Rolls-Royce
Rolls-Royce to supply mtu engines for 80-ton bollard pull tugboats in Brazil