The speed wasn't mentioned as a profit per freight thing, more that moving at hull speed rather than slow steaming reduces all the non-fuel costs. If you make n

The speed wasn't mentioned as a profit per freight thing, more that moving at hull speed rather than slow steaming reduces all the non-fuel costs. If you make n times as many trips with the same salaries amd same capital expendature then paying times as much per unit time may (or may not) be a net positive. Plus seeing as you brought it up there is probably a small niche for a premium of 2 weeks over 2 months (even if it's minor). It hasn't pencilled out in the past because fuel costs are quadratic, but might increase revenue per unit slightly if marginal fuel costs are reduced. Still pretty sceptical on the niche being big enough to justify the R&D though.