I've been on the same run for a while. I've fought 5 ghost ships not including the first "final boss". HOW MANY GHOST SHIPS ARE THERE?
ARE THESE THE GHOSTS OF ALL THE SHIPS I SANK?
It was maybe my 20th try in trying to get S rank in the hardest bonus level and I had finally killed the damn thing but there were so many bullets in a pattern rushing at me that I thought, well this is it. Whisked the mouse into the direction of a bullet thinking, might a well get it over. And then I accidentally dodged it, giving me the last medal I needed to get them all. Thank you one pixel hit box
 "Bible Fight"){kind=icon}
 "Frantic Frigates"){kind=icon}
 "Bullet Heaven"){kind=icon}