PT Mitrabahtera Segara Sejati Tbk engages in the provision of sea-based shipping and logistics services for the coal mining industry. It operates through the following segments: Tugboat and Barge, Floating Crane and Consultancy. The Tugboat and Barge segment comprises of transport from loading port to unloading port, as well as transport from loading port to anchorage point for transshipment of bulk materials. The Floating Crane segment handles transshipment of bulk materials from barges and transfers them to anchored mother vessels for transshipment. The Consultancy segment provides consultancy to dockyard. The company was founded by Maria Francesca Hermawan and Jos Rudolf Bing Prasatya on March 24, 1994 and is headquartered in Jakarta, Indonesia.