Penetration diving

Penetration diving is a type of diving where the SCUBA diver enter a confined space from which there is no direct ascent to the atmosphere at the surface. There are generally several types of dive offering penetration diving: cave divings, wreck divings or diving other man-made, underwater structures.

Training in special techniques and equipment is essential. A redundant breathing gas supply and a distance line leading to the exit are the two most important differences from normal recreational diving and open-water diving. This type of diving is often carried out using technical diving techniques.

Because of the often prolonged dive time and/or increased depth, other breathing gases than air are often used. Nitrox is used for shallow diving and Trimix for deeper dives.

External Links

• GUE - Global Unterwater Explorers (http://www.gue.com/)
• IANTD - International Association of Nitrox and Technical Divers (http://www.iantd.com/)
• NACD - National Association for Cave Diving (http://www.safecavediving.com/)
• NSS-CDS - National Speleological Society Cave Diving Section (http://www.nsscds.com/)
• WKPP Woodville Karst Plain Project (http://www.wkpp.org)

• Dive Rite (http://www.dive-rite.com/ )
• The history of line arrows (http://www.dive-rite.com/products/history/linearrows.htm)