Introduction to Hot Works Onboard

Hot works mean any work requiring the use of electric arc or gas welding equipment, cutting burner equipment or other forms of naked flame, as well as heating or spark-generating tools, regardless of where it is carried out on board a ship. 

IMO MSC/Circ.1084

For reference, please find below a copy of the IMO MSC Circular 1084, Principles for Hot Work On Board All Types of Ships.