SSI Wreck Diving Practice Exam

When it comes to wreck diving, using double tanks or redundancy systems is highly recommended for several crucial reasons. Wrecks can present unique challenges and hazards, including limited access to the surface, potential entrapments, and unforeseen equipment failures.

Double tank setups provide a significant advantage in terms of air supply. In the event of a failure in one tank, having a second tank ensures that the diver still has access to breathable air, allowing for a safer ascent and exit from the wreck environment. This redundancy is crucial, especially considering that many wrecks are located in environments that can be challenging to navigate or where time spent underwater may be prolonged due to exploring complex structures.

Moreover, having two tanks allows divers the flexibility to carry different gas mixes if required for specific diving profiles, such as deeper penetrations within the wreck, making it a more versatile option. This configuration fosters a stronger emphasis on safety, greatly reducing the risks associated with potential problems underwater.

The other options, while they may have some merit in different diving scenarios, do not provide the same level of safety and redundancy that double tanks offer in wreck diving contexts. Single tank setups may be simpler but lack the backup necessarily for hazardous conditions. Steel tanks provide some stability advantages but aren't always essential for wreck