What is an overhead environment in wreck diving?

An overhead environment in wreck diving refers to a situation where the diver is in a space that is completely surrounded on top by an overhead structure, such as the hull of a wreck. In such environments, divers lose direct access to the surface or open water above, which presents unique challenges and safety considerations. The overhead structure can limit visibility, create entrapment risks, and necessitate the use of specialized techniques and equipment for safe navigation and escape.

Other options mention open water areas or currents, which do not describe the characteristics of an overhead environment. An open water area with no obstructions implies a lack of overhead coverage, while a location with strong currents doesn’t inherently define whether it’s an overhead environment. Finally, while easier bottom penetration could be a factor in certain wrecks, it does not accurately capture the essence of being in an overhead environment. Thus, the definition of an overhead environment is correctly characterized as a confined space where the diver is completely surrounded by water above.