Which ascent type is used when you run out of air at shallower depths?

Which ascent type is used when you run out of air at shallower depths?

• A. Buoyant emergency ascent
• B. Emergency Swimming Ascent
• C. Controlled ascent
• D. Descending

Answer: (B)

When you run out of air at a shallow depth, the safest move is an Emergency Swimming Ascent. This means actively swimming upward toward the surface using your fins and arms, without relying on a regulator. You ascend at a controlled, brisk pace and continuously exhale to prevent lung overexpansion injuries as you rise. The shallow distance to the surface makes this a quick, reliable way to reach breathable air again. If a buddy is close and has air, you can coordinate, but the priority is to get to the surface safely using your own effort. This approach differs from buoyant emergency ascent, which relies on buoyancy to rise, and from a normal controlled ascent used when you still have air. Descending isn’t an ascent at all, so the emergency swimming ascent is the appropriate choice here.

When you run out of air at a shallow depth, the safest move is an Emergency Swimming Ascent. This means actively swimming upward toward the surface using your fins and arms, without relying on a regulator. You ascend at a controlled, brisk pace and continuously exhale to prevent lung overexpansion injuries as you rise. The shallow distance to the surface makes this a quick, reliable way to reach breathable air again. If a buddy is close and has air, you can coordinate, but the priority is to get to the surface safely using your own effort. This approach differs from buoyant emergency ascent, which relies on buoyancy to rise, and from a normal controlled ascent used when you still have air. Descending isn’t an ascent at all, so the emergency swimming ascent is the appropriate choice here.