PT Wintermar Offshore Marine Tbk is an Indonesia-based company primarily provisioning offshore supporting transportation services for companies in the oil and gas industry. It owns and operates various types of vessels, such as platform supply vessels, anchor handling tugs, anchor handling tug supply vessels, fast utility vessels, offshore tugs, accommodation vessels, crew boats, oil barges, landing crafts, oil tankers, and tugboats. Besides using its own vessels, the company also charters its affiliates' and third-parties' vessels to provide its services. It provides other services, such as ship management. Most of its revenue is contributed by own vessels segment.