Indonesian rescuers were searching for 29 people who remained missing Thursday after a ferry sank and six people died the previous night near Indonesia’s resort island of Bali.

Indonesian authorities deployed navy ships and helicopters Friday in the intensified search for 29 people still missing almost two days after a ferry sank near the tourist

Twenty-nine people remain missing after a ferry sank in the Bali Strait on Wednesday evening. Six people have been confirmed killed and 30 rescued, but further search efforts have been delayed by rough seas.