The reason is because the company that operates a shipping vessel often doesn’t own the ship–they charter it. It would be the owner that pays for the fancy wind propulsion systems but only the charterer would benefit from the reduced fuel costs. Owner-operators of shipping vessels sometimes do have a supplemental wind propulsion system.
Shrug, they been talking about this since the 90’s…
If it was feasible and economically viable. It would have happened already.
The reason is because the company that operates a shipping vessel often doesn’t own the ship–they charter it. It would be the owner that pays for the fancy wind propulsion systems but only the charterer would benefit from the reduced fuel costs. Owner-operators of shipping vessels sometimes do have a supplemental wind propulsion system.