

There are ~370 cruise ships currently: https://cruisemarketwatch.com/capacity/
There are ~100000 cargo ships. https://www.virtuemarine.nl/post/top-maritime-nations-largest-fleets-worldwide
Cruise ships certainly aren’t great, but they are a rounding error, not a significant driving force.








I am actually surprised its that high, there aren’t many cruise lines, and they don’t have that many boats. I would have guessed <100.