I think the headline buried the lede. The important part isn't the "sail itself" bit. It is: > The HiNAS 2.0 system provided an increase in fuel efficiency of

I think the headline buried the lede. The important part isn't the "sail itself" bit. It is: > The HiNAS 2.0 system provided an increase in fuel efficiency of 7 percent and a reduction of greenhouse gas emissions of 5 percent Your concern about extended time didn't seem to be the case in this journey because 33 days is about right for a Pacific crossing. Most cost structures of shipping stack up around: 1. Fuel 2. Port charges 3. Crew wages and travel 4. Management fees 5. Hull and machinery and P&I insurance premiums 6. Stores 7. Lubricants 8. Spare parts 9. Maintenance and repairs 10. Survey and certification 11. Dry docking 12. Finance (payments) Of these, fuel is the biggest by far so it made sense to optimize on that first. Port charges are the second-largest cost, especially including any canal transits if those are involved. Then management, finance and insurance. Then maintenance (including dry docking). And then crew and crew-related costs. It is an interesting optimization problem for sure.