It's likely they don't even have access to the ship.
The scammers pick high value items like aircraft and high-end cars, then re-advertise them, often with different photo's as you've noticed.
Unwitting buyers are duped into thinking it's a genuine advertisement and are conned into paying the fee to the "seller" - the aircraft may not even be for sale by it's real owner.
Clever really. And many many people fall for it..
