What might indicate that the breathing gas supply in the MK-20 system is compromised?

The indication that the breathing gas supply in the MK-20 system is compromised is signified by difficulty in breathing. When divers experience this issue, it typically suggests that there is an obstruction or malfunction within the air supply system. This could result from a blocked line, a malfunctioning regulator, or low gas pressure, all of which make it more challenging to draw in the necessary air supply.

In a diving context, effective communication regarding air supply is crucial for safety. Divers must remain aware of their breathing patterns and be vigilant for any changes. If they notice a decrease in airflow or an increase in effort required to breathe, it is an immediate sign to assess the situation and take appropriate action, such as ascending to a shallower depth or signaling for assistance.

Other factors such as increased water temperature, unusual noises from the equipment, or bright underwater lights are indicative of different situations but do not directly pertain to the integrity of the breathing gas supply. These factors may enhance the diving experience or indicate environmental conditions but are not reliable indicators of a compromised breathing gas system.