A speedboat carrying about 47 people capsized in waters off North Kalimantan province in central Indonesia on Tuesday.

 Rejeki Baru speed boat, heading to Tanjung Selor of Bulungan district, sank after sailing 1 km off the coast of Pelabuhan Tengkayu of Tarakan town, spokesman of the national search and rescue office Marsudi said.

"Our personnel are undertaking a search and rescue operation for the victims of the incident," he told reporter.

Rescuers from the navy and water police also took part in the rescue operation.