Ten minutes later, you are on board the Galapagos Canary NWF. Jackie introduces you to Brendan, the helmsman. You turn and wave at Terry, who is standing by with the radio on board the Celeste. He doesn't wave back.

You take out your notepad. "Tell me everything," you say to Jackie. "From the beginning."

"Okay," she says, thinking back. "We left Buenos Aires ten days ago, fully stocked with fresh water and food."

"And everyone seemed well at that time?"

"Oh, oui. But Brendan, he fell ill at the end of the second day."