Abstract: Method and apparatus for galvanizing steel sheet in a single galvanizing hot dip pot of the careless induction type, with great flexibility for frequent changes of galvanizing alloys, whereby the productivity of the single pot plant is increased and its investment costs are considerably lowered, in contrast with the current practice of operating plants with two continuously heated galvanizing pots, one in operation and one in stand-by. The single pot having a plurality of associated ingot molds of a capacity to hold a full charge of the alloy being discharged from the pot and a pumping system to empty a molten charge of one alloy composition from the pot into at least some of the stand-by ingot molds (ready for re-use later) and a transport system for replacing the removed charge by an alternate charge in the form of solid ingots of a different alloy composition (which can be either recycled ingots formed from a molten charge previously removed from the pot and/or fresh ingots).