What component is not typically associated with a sea chest?

A sea chest is a critical component on a vessel that serves as an intake from which seawater is drawn for various functions, primarily to cool engines and other machinery. It typically includes multiple connections for raw water systems used for cooling, deicing, and other essential onboard systems.

Selecting HVAC/A/C as not typically associated with a sea chest is correct because heating, ventilation, and air conditioning systems usually utilize fresh water or other means rather than seawater. While seawater is often used for cooling machinery, it is not the standard for climate control systems, which prefer closed-loop cooling systems using freshwater sources.

In contrast, raw water systems for cooling systems and deicing functions are directly tied to the sea chest, with 2 raw water indicating the dual systems that can draw from the sea trunk. Similarly, a P6 stand pipe refers to components that help in flooding or draining and are often linked to water intake systems, which are also relevant to how a sea chest operates. Therefore, HVAC/A/C stands out as the component that does not pertain to the functions typically served by a sea chest on a vessel.