Their website describes a 15 passenger life raft and the newspaper article suggests that there were 25 persons onboard. I've said it before and gotten in trouble for it, but it reinforces my beliefs. Safety of some of these third world boats is not as carefully considered as it is on vessels subject to more rigorous inspection standards.
Not to say anyone can't lose an engine or go aground. Hopefully it isn't the normal course of a trip, but it does happen, even in or just out of more safety oriented countries. It isn't the initial problem that is the problem, it's how the crew communicates with and handles the emergencies of 2 Kiwis, 1 Brit, 2 Spaniards, 2 Dutch, 2 Germans and 1 from France.
I'd have a hard time with that myself, but thankfully Europeans seem to have far better language skills than most American Captains, and I'm sure most Indonesian Captains.