Indonesian rescue teams located 11 European tourists and one local crew member alive after their speedboat sank off the coast of Sulawesi island, officials reported Saturday. The vessel, which left a dive resort in Tojo Unauna regency on Friday morning, was traveling toward Marisa Port in Gorontalo province but failed to arrive as scheduled.

Heriyanto, head of the Gorontalo Province Search and Rescue Office, said a local tour guide alerted authorities to the missing boat around 3:40 p.m. Friday, prompting an immediate search operation. The speedboat carried five Dutch nationals, three Germans, one Czech, one Belgian, one French woman, and two Indonesian crew members.

Rescuers deployed dozens of personnel and utilized equipment including thermal-imaging drones and diving gear to cover roughly 300 square nautical miles of Tomini Bay, a popular marine tourism area known for its scattered islands. Although weather forecasts predicted generally clear skies, strong winds and waves up to 2.5 meters (8 feet) high complicated the search efforts.

By Saturday afternoon, the rescue teams located all 11 European tourists and one Indonesian crew member alive aboard two speedboats. However, the 29-year-old captain of the vessel remained missing. Authorities said the search for the captain will continue for up to seven days.

The rescued individuals have been transferred to a resort in Tojo Unauna for care and monitoring. No immediate statements have been issued by the embassies of the tourists involved.