Which type of gauges are preferred for night diving?

Luminescent gauges are preferred for night diving due to their ability to be visible in low light conditions. These gauges utilize materials that glow in the dark, allowing for easy reading without the need for additional light sources, which can be disruptive or attract unwanted attention from marine life. The luminescence enables divers to quickly and accurately monitor vital statistics, such as air pressure and depth, while maintaining situational awareness. This is particularly crucial in dark environments underwater where visibility is significantly reduced.

In contrast, digital gauges may require a power source for illumination, and mechanical gauges may not offer enhanced visibility in dark conditions. Analog gauges, while functional, also lack the built-in luminescence that ensures readability at night. Thus, luminescent gauges are specifically designed to meet the challenges of night diving, making them the optimal choice for divers in these circumstances.