PT Wintermar Offshore Marine Tbk (WINS) started as a small tug and barge operator in 1970. Currently, the company has become one of the largest marine vessel operators in Indonesia, with operations in over 12 countries. The company supports upstream activities of offshore oil and gas companies in exploration and development, with various fleets, such as platform supply vessels, anchor handling tug supply, anchor handling tugs, fast utility vessels, landing crafts, heavy load deck barges, and tug boats. The head office is located on Kebayoran Lama Street 155, West Jakarta.