Scuba diving is the term used to describe the use of a Self Contained Underwater Breathing Apparatus to stay underwater for periods of time greater than the average individual can breath-hold. The diver self-propels underwater using fins attached to his/her feet. Some divers also move around with the assistance of a DPV (Diver Propulsion Vehicle), commonly referred to as a "scooter", or by using surface-tethered devices called sleds, which are pulled by a boat.
Divers are not limited to the use of scuba equipment in their sojourns underwater. While the Aqua-lung, developed by Emile Gagnan with assistance from Jacques-Yves Cousteau, is an "open-circuit" unit, rebreathers (both semi-closed circuit and closed circuit) and Surface-supplied systems are used depending on the needs of the diver.
Although scuba diving is still evolving, general classifications have grown up to describe the pursuits a diver might follow. These classifications include, but are not limited to: recreational diving, public safety diving, technical diving (aka Techy Divers), military diving and commercial diving. Within recreational diving there are those who are considered professional divers, because they maintain a professional standard of training and skills. Some consider Technical Diving to be a subset of recreational diving, while others separate it out due to the extensively different training equipment and knowledge required to execute technical dives. Public safety diving and military diving might likewise be classified as commercial diving because the practitioners make a living from their pursuit of diving. However, public safety divers (police or rescue) and military divers have a different mission than the typical commercial diver.
More on [ Scuba diving ]

Recreational Divers Support - Technical and recreational custom air, nitrox and mixed gas decompression software.
Meta Description: [ Free demo download. Departure: Scuba dive and decompression software. This software calculates and plans dives for altitude, nitrox, decompression, trimix and mixed gas, and blends gases. Departure uses deep stops and is very user friendly. ]
Casuarina Aquatics, Inc. - Software for planning technical scuba dives and for training divers in the physics and physiology of diving. Also provide scuba instruction and dive travel for training and recreation.
DCA 2000 - Professional software solution for the administration, marketing, and monitoring of small and large dive centers. Available in English and German.
Dive Computer Interfaces - Plans for homemade interfaces for Mares dive computer, free software, and links.
Meta Description: [ This site contains plans, schematics and software for homemade construction of dive computer interfaces for the Mares dive computers: Guardian, Tutor, Apneist, Surveyor, Surveyor nitrox, M1. The software is freeware and will show the dive profile and all the logged data in the internal logbook. ]
Dive Table Formats - Offers 9 different dive table formats in both metric and imperial.
Meta Description: [ Featuring free software that uses the 9 most popular dive tables in both metric and imperial formats. If it's been a while since you did dive table problems, check out this site!! ]
DiveLogOnline - Free online scuba dive log book for divers.
Meta Description: [ Online scuba diving log book. Log your own dive history and read reviews from other divers worldwide. ]
Gas Absorption Program - GAP is a free downloadable decompression program that utilizes unpadded bulhmann's decompression algorithm for mixed gas decompression.
Meta Description: [ GAP-Software The home of decompression software for the recreational, technical and commercial diving world ]
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Global Underwater Explorers - DecoPlanner utilizes gradient factor calculations, allowing safety factors and deep stops to be customized across multiple diving profiles for mixed gas diving.
Immersions - Internet Dive Log is a web-enabled scuba diving application. Free demo download available and allows up to 20 dives to be recorded. Also offers video production and travel services.
Meta Description: [ Immersions is a company designed entirely around SCUBA diving.
We have the highest rated dive log application available for download.
We also offer video production and travel services.
Our on-line database has thousands of dive logs and pictures
On this site you will find data on scuba... ]
Internet Dive Log - IDL is a complete scuba diving application, tracking all aspects of diving, and works with all major brands of dive computers. Still Beta testing and free.
ReefNet Software - Software for divers and fish watchers and dive logs.
Sea Wolff Diving Software - Dive Log for Windows. Useful software with versions for divers, instructors, SAR Teams, and Divemasters.
Meta Description: [ SCUBA Diving Software Dive Log Dive logs Sea Wolff Diving Diving Book Sales SCUBA Equipment Sales Dive Travel divelog ]
Travel Diver - Free online divelog for those that register. Includes features, message board, and classifieds.
Meta Description: [ TravelDiver online divelog SCUBA ]
V-Planner - Decompression software which uses a VPM bubble model with deep stops inbuilt. Can set conservatism levels, create lost gas and bail out plans, extended stops, and air breaks.
Meta Description: [ VPM & VPM-B dive decompression software. ]
Voyager Desktop Decompression System - Full featured decompression planning software allows you to plan and execute dives more intelligently, safely, and efficiently. Complete table generation and bailout schedules for all gas mixtures and depths. Suited to all levels of expertise. Available for Windows 95 and Windows 3.x.
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