Ships today are joined by weld in all areas, such as hull, bulkheads, decks, foundations, piping, and machinery. Welder apprentices will learn a range of manual, semiautomatic, and automatic welding processes in the shipyard’s welding school. They learn how to check for metal preparation and how to interpret the many different types of weld symbols. Apprentices use a wide range of metals and welding processes to perform structural and pipe welds in all phases of submarine and aircraft carrier construction and overhaul. Welder apprentices also learn to safely use torches to preheat areas before they are welded.