A few football fields would cause a lot of water drag and also probably not even be enough power. A solar panel is about half a kW, and I’m guessing a big ship

A few football fields would cause a lot of water drag and also probably not even be enough power. A solar panel is about half a kW, and I’m guessing a big ship like that will take upwards of 80 to 100 MW normally, so you need like 160k to 200k panels.