Re: The incompetence of the crew.
So this guy is counting people as they come back on the boat. 2 guys leave again and when they return he counts them again, thus thinking he had 20 on the boat.
The problem: The girl assisting people on and off the boat had to have known the procedure he was using, so she neglects to inform him? And why would you not take a final count BEFORE you sail off. Totally asinine.