If trapped under a boat, what should personnel seek out?

When personnel find themselves trapped under a boat, the primary objective is to ensure their survival by seeking an air pocket near the surface. An air pocket provides a vital source of breathable air, which is essential for survival in underwater scenarios. Accessing such a pocket can extend the time a person has to wait for rescue, allowing them to conserve energy and maintain their composure.

While emergency distress signals, light sources, and open water may be relevant in other contexts of rescue, they are not the immediate priority when trapped underwater. The chance of locating these elements is significantly reduced in an emergent underwater situation, making the pursuit of an air pocket the most critical action to take for survival.