The shipyard’s numerous facilities require installation, maintenance and repair of all electrical systems and components. Maintenance electrician apprentices learn to provide power for new equipment and lighting. They also learn to maintain and troubleshoot virtually every electrical and electronic component in the shipyard. The work may take apprentices anywhere, from an underground transmission line to the top of a 23- story crane. They will take several theory courses to learn the importance of electrical safety. Work assignments can vary from installing a simple electrical outlet to repairing and maintaining complex numerically controlled equipment.