37 Construction of offshore rigs and ships; general contracting services in the field of marine construction, shipbuilding and offshore drilling; construction of environmentally-conscious buildings; marine construction; construction management services; installation, maintenance and repair of offshore rigs and ships; cleaning of ships; construction, fabrication in the nature of construction and repair of offshore production and/or storage facilities, drilling rigs, ships, barges and all types of vessels; construction, installation, maintenance, repair, servicing of electricity generation, transmission and distribution apparatus and instruments; construction, installation, relating to offshore and marine vessels, ships and structures; information related to marine construction and construction of offshore rigs and ships; providing information related to the repair of ships; on site and offshore project management and refurbishment relating to shipbuilding, dry docking, afloat repairs and voyage repairs, underwater construction and repairs, painting, major modifications and conversion of vessels; on site and offshore project management and refurbishment relating to the construction of facilities; on site and offshore project management and refurbishment relating to the construction, fabrication in the nature of construction and repair of all types of vessels, offshore storage and/or production facilities, drilling rigs, ships, barges and other specialized vessels; construction of steel structures and industrial equipment and plant; shipbuilding, namely, reparative dry docking, afloat repairs and voyage repairs, underwater construction and repairs, painting, major modifications and conversion of ships, barges and all types of vessels, offshore storage and/or production facilities and drilling rigs; construction, installation and erection of ships, barges, vessels, offshore storage and/or production facilities, structures and drilling rigs; rental of construction and building equipment, namely, automation, instrumentation and control systems construction and construction management of industrial and infrastructural plants in environmental business; installation, repair and maintenance of ships; ship building; construction of ships; inspection services in the course of construction of ships, vessels, barges, offshore storage and/or production facilities and drilling rigs; cleaning of ships, all types of vessels, barges, offshore storage and/or production facilities, drilling rigs; sub-contracting services in relation to building construction, repair and installation services; underwater construction, cleaning and repairs of offshore rigs and ships; equipment maintenance services for energy related or energy using equipment; information, advisory and consultancy services relating to the aforesaid; installation of energy consumption reducing equipment; installation of environmental engineering systems; installation, repair and servicing automation, instrumentation and control systems; janitorial services; maintenance and repair of infrastructural plants in environmental business; maintenance, repair and cleaning of building, industrial plants and transportation equipment; marine engineering; marine lifting services for construction purposes; appliance repair services; boiler cleaning and repair; building construction; building construction supervision; building maintenance; rental of cleaning machines; rental of construction equipment; rental of construction equipment and machines; rental of lifting apparatus for construction purposes; rental of marine building materials, equipment and products; rental of material handling equipment for construction purposes; rental of heavy cranes and lifting and hoisting equipment for construction purposes; repair, maintenance and servicing of in this class