List the main components of a typical air starting system for large marine engines.

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Air starting systems on large marine engines rely on stored compressed air that is released through starting air valves to rotate the engine until it can run on its own. The essential parts are the air compressor that produces the pressurized air, an air receiver to store it, starting air valves to control and meter the air flow into the engine’s starting mechanism, the piping and fittings that route the air from the receiver to the engine, and a control panel that houses the controls, interlocks, gauges, and sequencing needed to operate the system safely. This combination gives a quick, reliable means to start large engines, which require a strong burst of rotation to overcome inertia and compressive resistance at start-up. Other options describe subsystems not part of the starting air system: fuel, lubrication, cooling, and exhaust belong to other engine systems; boiler‑related components aren’t involved in starting large marine diesel engines; spark plug and ignition components are for spark-ignited, not typical compression-ignition, engines.