Found this at the marina yesterday
#25
I was skeptical also, until I read in the news last week that customs had impounded an 8 o/b RIB, with a payload capacity of about 8 tons, for suspected drug activities. Not the same boat as this one, but if there's one there's probably others too. Unless customs were sniffing around the boat too much, I'm sure they could count the no. engines OK.