Johnson Williang Sutjipto

The Institute of Marine Engineering, Science & Technology is an international professional body and learned society that promotes the development of marine engineering, science, and technology. The non-profit company is based in London, UK, and has subsidiaries in the United Kingdom. The British company provides opportunities for the exchange of ideas and practices and uphold the status and knowledge of marine professionals. The organization has Special Interest Groups (SIGs) that operate to the benefit of a specialist field and is also a publisher of marine technical books.

Part of PT Wintermar Offshore Marine Tbk, PT Sentosasegara Mulia Shipping operates shipping vessels. The company is based in Jakarta, Indonesia. Janto Lili has been the CEO of the Indonesian company since 2013.

PT Pelayaran Salam Bahagia provides marine vessels and related services. Johnson Williang Sutjipto has been the CEO of the Indonesian company since 2002.

PT Mariana Bahagia engages in the shipbuilding, shipyards, and ship engineering. Its business activities include construction of ships and other floating vessels; repair, conversion, and reconversion of ships; engineering of boats, ships, oil rigs, and any other vessel, as well as oceanographic engineering. The Company was founded in 1980 and is headquartered in Palembang, Indonesia.