Colombo Dockyard PLC engages in the ship repair, shipbuilding, and heavy and offshore engineering businesses. It operates through Ship Repair; Ship Building; Heavy Engineering; and Material and Other Sales segments. The company offers ship repair services, such as machinery, hull, propeller, electrical, electronic and automation, and cargo gear, as well as internal tank, cargo hold blasting, and coating services; and installs ballast water treatment systems. It also builds multipurpose platform supply, cable laying, platform/ROV support, anchor handling tug supply, coastal surveillance, passenger cum cargo, and firefighting vessels; eco bulk carriers; landing crafts; berthing and harbour tugs; crew and tugboats; passenger, steel pilot, and mooring launches; and split hopper and deck/water/cargo barges. In addition, it offers heavy engineering services for installations, such as fuel and LPG storage systems; cement silos and piping systems; installation of power stations; modification and repair of main engines; fabrication and installation of heavy steel structures; and installation of heavy structures related to irrigation and other industries. Further, it provides afloat steel renewals; engine and auxiliary machinery; shaft line, propeller, and stern seals bonding; hydraulic systems; rope access; riding crew; electrical motors and alternators servicing; underwater inspections, repairs, and renewals; and load testing and bollard pull test services. The company offers offshore engineering services and technical services; and operates graving dry docks. It operates in India, Maldives, the United Arab Emirates, Sri Lanka, Singapore, Japan, Germany, Greece, Hong Kong, Malaysia, France, Norway, Cyprus, Pakistan, the United Kingdom, Bangladesh, Thailand, Indonesia, Mauritius, the Netherlands, Spain, Seychelles, and internationally. The company was incorporated in 1974 and is based in Colombo, Sri Lanka. Colombo Dockyard PLC is a subsidiary of Onomichi Dockyard Co., Ltd.