Saltwater causes huge amounts of wear and tear, and weather fluctuations can completely destroy your ship. What you're basically doing is paying a ton more money per square foot of solar panel space than you would be on land, because every bit of that space needs to be attached to a ship.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.