Greece ? Navy divers searched the sunken wreckage of a cruise ship Friday for the bodies of a Frenchman and his daughter who disappeared after the vessel foundered on a volcanic reef – the only two people missing despite what passengers described as a chaotic evacuation in the Aegean Sea.

Nearly 1,600 people were retrieved from the sinking ship in a three-hour rescue operation, but some passengers complained of an insufficient supply of life vests, little guidance from crew members and being forced into a steep climb down rope-ladders.

The 469-foot Sea Diamond struck rocks Thursday in the sea-filled crater formed by a massive volcano eruption 3,500 years ago off the island of Santorini.

The captain and five officers were summoned to appear at a public prosecutor’s office on the island of Naxos to make a formal declaration of their version of events, which is standard procedure in such incidents. No charges have yet been filed, as it remains early in the investigation.