For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.
This is fairly common in the relatively stable subtropical high pressure areas.
It is a similar phenomena to contrails.
The ship exhaust provides the condensation nuclei.
I think that explanation is a crock. The writer seems to have misunderstood something. The exhast of steam powered ships comes out of their exhaust stacks high above the water. Nuclear powered ones have no exhaust, per se. I believe what those trails in the water are showing are the trails of aerated water made by the ships’ screws churning the water, propelling the vessel on its way.
“These human-made clouds could reflect so much sunlight they might help fight global warming.”
Great plan. Our April and May here in the Inland Northwest were about NINE degrees below normal in April and May. Spring is very late arriving here, too. Nothing but wet and cold.
At least this crackpot scheme would be reversible if they shut off the mid-ocean seawater aerosol generators.