What does an upward pointing triangle indicate on a dive computer?

An upward pointing triangle on a dive computer indicates that an ascent is required to maintain safe diving practices, specifically in relation to the decompression ceiling. This visual alert serves as a crucial reminder for divers to ascend to a designated depth in order to prevent potentially dangerous situations related to decompression sickness. When the dive computer indicates the need to ascend, it typically means that the diver is approaching or has exceeded their safe limits for the current depth, and needs to adjust their position to reduce the risk of nitrogen bubbles forming in the body.

The dive computer uses this visual cue in conjunction with previous dive data, allowing divers to track their ascent closely and ensure that they adhere to safe decompression procedures. By following the triangle's indication, divers can manage their ascent rate and make necessary adjustments to their dive plan as needed.

Understanding this alert is significant as it directly relates to diver safety and ensures proper adherence to recommended ascent profiles, which are critical in preventing decompression sickness during and after a dive.