Closely linked to the oil and gas industry, is the joint venture Wilson Sons Ultratug Offshore (which Wilson Sons owns a 50% participation), which offers maritime support services to oil and gas exploration and production platforms, transporting equipments, drilling mud, cement and food, and other materials necessary to oil businesses and to platforms located on the Brazilian coast.These services are provided with offshore support vessels, the PSVs (platform supply vessels), of which Wilson Sons Ultratug Offshore has one of the largest and most modern fleet flying the Brazilian flag, all built in the shipyard of the company.