“…Whilst the literature on comparative studies of Arctic routes has increased considerably since 2011, so has the difficulty of identifying valid parameters regarding certain cost and operational factors (Lasserre, 2014(Lasserre, , 2015Meng et al, 2016;Theocharis et al, 2018). Minimal shipping activity on Arctic waters regarding full transits coupled with the complexity of Arctic maritime operations in harsh climate and sea ice, and the relatively small ice class fleet globally (Yumashev et al, 2017;Solakivi et al, 2017Solakivi et al, , 2018Tseng and Cullinane, 2018), increase the variability of estimates and underline the difficulty of obtaining a global view on Arctic shipping economics. Solakivi et al (2017Solakivi et al ( , 2018 recently attempted to address this gap by statistically analysing and determining increased costs of ice class containerships, and bulkers and tankers respectively.…”