SDI Open Water Scuba Diver Practice Exam

An independent emergency ascent may be the best response to an out-of-air situation if:

1. You are in a current.

2. The surface is closer than a buddy.

3. There is no one else around.

4. You forgot your safety equipment.

The correct answer is: The surface is closer than a buddy.

In an out-of-air situation, it is crucial to respond quickly and effectively to ensure your safety. Opting for an independent emergency ascent when the surface is closer than your buddy is a logical choice because it allows you to minimize the time spent at depth and reduces the risk of experiencing further complications related to low gas supply, such as panic or disorientation. When you're close to the surface, the urgency increases; you are in a life-threatening situation where every second counts. Choosing to ascend directly rather than attempting to reach and communicate with your buddy can prevent potential complications that may arise from remaining underwater longer, such as nitrogen narcosis or hypoxia. In contrast, scenarios like being in a current or the presence of other divers may complicate the situation and potentially increase risks, making independent ascent less advisable. Moreover, forgetting safety equipment would not be a valid reason to pursue this ascent, as it is important to have equipment like a surface marker buoy, which aids in visibility and safety during an ascent. Hence, the important consideration should always aim at making the safest decision under pressure, prioritizing reaching the surface when feasible.