This includes detailed knowledge of the operating characteristics of the involved machinery, equipment, and systems; their functional relationships; the applicable installation and repair procedures, methods, and trade practices; and the unique environmental conditions under which work is performed aboard marine craft, for example, the lack of space between bulkheads and decks and the proximity of one type of machinery to another. The candidate must be able to support services for nonsupervisory work involving the dismantling, repairing, relocating, modifying, maintaining, aligning, and installing of a wide variety of marine machinery, equipment, and systems.