PT Wintermar Offshore Marine Tbk supporting services for the offshore transportation for the oil and gas industry in Indonesia, Malaysia, Brunei, Myanmar, Thailand, India, Saudi Arabia, Nigeria, and Taiwan. The company operates through three segments: Charter of Own Vessels, Charter of Third Party Vessels, and Other Services. Its fleet includes platform supply vessels, anchor handling tug supply vessels, anchor handling tug vessels, fast utility vessels, fast multi-purpose supply vessels, azimuth stern drive tugs, utility vessels, heavy load barges, landing crafts, and tug boats. The company also offers rig moving and anchor handling, crew change and rig supply, firefighting and emergency rescue, air diving and remotely operated vehicle support, offshore windfarm installation support, pipe tailing support, seismic survey support, cable laying support, and harbor towage services. It owns and operates 38 vessels. The company was formerly known as PT Swakarya Mulia Shipping and changed its name to PT Wintermar Offshore Marine Tbk in September 2010. PT Wintermar Offshore Marine Tbk was founded in 1970 and is based in West Jakarta, Indonesia.