Jun 16 UPDATE: Tug was found safe, early in the morning Jun 16, distress signals were repeatedly sent by a faulty EPIRB.
Tug SUMBER MARINE 5 with 13 crew on board, towing barge SUMBER KAPUAS 232, went missing in southern South China sea N of Bangka Island, Indonesia, after issuing distress signal at around 0300 UTC Jun 15. Tug was towing barge from Batam island, Singapore Strait, to Banjarmasin, southern Kalimantan, Indonesia. SAR was launched.
Tug SUMBER MARINE 5, IMO 8774279, GT 139, built...
http://www.maritimebulletin.net/2020/06/15/tug-with-13-crew-missing-in-south-china-sea-indonesia/