[jmts]

A curious thought just popped into my head. Deliveries tend to be time critical. I can't think of many deliveries that would tend not to be. However ocean cleanup struck me as a type of 'collection' that may hypothetically find sail power to be an advantage. I've done zero research and have absolutely no background in the area, however I do recall from my years fishing that at least surface garbage tends to follow wind patterns. If this can be exploited by an autonomous vehicle in some way, perhaps it could prove to be an advantage? Clusters of networked vessels could work together to provide enough live data on wind direction to avoid errors with localised high frequency changes in wind direction perhaps.

The down sides would be that once the vessel has a full cargo, it may take longer than a powered vessel to return to wherever it will offload the waste (perhaps a larger 'mothership' could follow?), and with no sailing expertise, I suspect that it may be harder to direct such a vessel than just using a powered one with the appropriate sensors aboard.