PT Indo Straits Tbk is an Indonesian-based firm. The company with its subsidiaries engaged in providing marine engineering solutions and related services. In addition, the company also provides design and construction services and the consultants that include third-party consulting services in marine civil work. It operates in two segments namely; Integrated Marine Engineering service segment which covers dredging, reclamation, port construction, installation of pile, wave breaker and coastal protection, which also contributes a major part of revenue, and Marine Logistics Support service segment includes transportation support and transshipment for coal mining company, coal barging and construction work for oil and gas mining company. Most of its revenue comes from the Indonesian market.