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Dive training at ProTec consists of theoretical and practical units as with most other diving agencies. There is a division into 2 main areas: Freediving and Scuba diving . The scuba certifications are divided into recreational diving and technical diving , where recreational is further subdivided into introduction and core and specialties.
LED (light emitting diode) - are very durable, efficient and powerful. HID (high intensity discharge) - are extremely powerful and have a nearly white beam. On the downside, HIDs are very delicate and quite expensive. [7] A modern dive light usually has an output of at least about 100 lumens. Bright dive lights have values from about 2500 lumens.
Technical diver during a decompression stop. There is some professional disagreement as to what exactly technical diving encompasses. [9] [10] [11] Nitrox diving and rebreather diving were originally considered technical, but this is no longer universally the case as several certification agencies now offer Recreational Nitrox and recreational rebreather training and certification.
PADI offers dive shops and training centers the opportunity to affiliate with the PADI brand by becoming a member of the PADI Retailer and Resort Association (PADI RRA) which is a worldwide group of dive shops and resorts committed to selling PADI products and promoting the PADI diving and marketing philosophy. PADI Worldwide, Inc., contracts ...
Dive timer is an instrument that displays and records depth and elapsed time during the dive. It is usually possible to extract the information after the dive. This function is often available as "Gauge setting" on dive computers. Diving compass for underwater navigation. This may be a regular magnetic compass, but is often a selectable ...
A "no-stop dive", also commonly but inaccurately referred to as a "no-decompression" dive is a dive that needs no decompression stops during the ascent according to the chosen algorithm or tables, [11] and relies on a controlled ascent rate for the elimination of excess inert gases. In effect, the diver is doing continuous decompression during ...
For safety and efficiency, divers may need to communicate with others diving with them, or with their surface support team. The interface between air and water is an effective barrier to direct sound transmission, [9] and the natural water surface is also a barrier to visual communication across the interface due to internal reflection, particularly when not perfectly smooth.
A dive light can provide light if the visibility is sufficient. In zero visibility special precautions must be taken. It is usually preferable to use surface-supplied equipment with voice communications, as the diver can not get lost, and the surface team can monitor depth, time, breathing gas and decompression obligations.