GIS, also known as Grand Isle Shipyard, is an oil field contractor that offers a range of construction services. Founded in 1948, the company provides various onshore and offshore painting services. GIS also offers a variety of environmental services, including tank and vessel cleaning. The company provides drafting, contract labor, material and project management, and pipe and structural dimensioning services. GIS offers heavy-equipment, dirt and aggregate sale services. The company provides excavation, clearing, and delivery and placement services. GIS offers plant construction and maintenance services. The company provides upgrade, revamping and modification services. GIS offers offshore demolition and abandonment services.