Which of the following is NOT considered life support diving equipment?

Life support diving equipment refers to the tools and gear that directly assist a diver in breathing underwater and maintaining a safe and controlled environment during a dive. Tanks, regulators, and buoyancy control devices all fall into this category.

Tanks are critical for storing the breathing gas that divers need while submerged. Regulators convert the high-pressure air from the tank to a breathable pressure, allowing divers to inhale the gas safely. Buoyancy control devices are essential for helping divers manage their buoyancy, which is vital for maintaining stable ascent and descent while preventing situations such as uncontrolled ascents or descents.

In contrast, knickers, which are a type of clothing, do not function as equipment that supports life during diving. They do not serve any purpose in terms of gas supply, breathing assistance, or buoyancy control. Hence, they are not classified as life support diving equipment.