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SCUBA. Self-contained underwater breathing apparatusCompressed air tankBuoyancy compensator (BC)RegulatorWeight beltMask, snorkelfins. . Scuba Diving. A brief history
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1. Scuba Diving and On-line Piracy The Common Link in a Web of Conspiracy
Casey Nelson & Caryl Gonzalez
2. SCUBA Self-contained underwater breathing apparatus
Compressed air tank
Buoyancy compensator (BC)
Regulator
Weight belt
Mask, snorkel
fins
3. Scuba Diving A brief history…
Young skin divers in search of seafood
Breath holders
Greeks to early 1900s
19th century: effects of water pressure on body, safe limits of compressed diving
1948 Rene Bussoz of Rene’s Sporting Goods in Westwood, California
Imported Aqua-Lung
4. Scuba Diving 1960s
Equipment improves to similar to what we use today
1983
Dive computer introduced
1990s
Advances in technology of mixed gases, full face masks, underwater voice communication
5. Training standards Aqua-Lung (Depression Era)
Sold to anyone
Formal training programs
Military, scientific institutions, dive clubs
Neal Hess certifies divers (1950s)
Instructors
National Diving Patrol
Al Tillman (1953)
Sports director for LA county
World’s first public dive training agency
World’s first civilian Underwater Instructor Certification course
6. Training standards 1960s
Accident rates for scuba divers increase
NAUI (National Assoc of Underwater Instructors)
Formed in 1960
More rigorous
PADI (Professional Assoc of Diving Instructors)
Formed in 1966
7. Basic Concepts You are under pressure while diving
The deeper you go, the more water pressure you experience
Air tank supplies you with air at pressures equal to the surrounding water
Air-filled spaces-you must breathe!
Lungs, sinuses, middle ear
All these spaces must be filled with air equal to surrounding pressure
No diving with cold, sinus congestion or anything that restricts movement of air between these spaces
8. Basic Concepts You must breathe all the time while diving
NEVER hold your breath while breathing compressed air
As you ascend, the surrounding water pressure decreases
Air expands as you ascend
Breathe naturally to vent this air
Learning to control your buoyancy
9. Basic Concepts What if I run out of air?
Guage, extra regulator
What if I get too excited?
What if something goes wrong?
Why you get certified…
What if I see a shark?
Most experienced divers have never seen a shark
10. Decompression sickness Air= Oxygen + Nitrogen
Oxygen
At the surface
Balance of Nitrogen consumed and eliminated
Under increased pressure
Concentration of Nitrogen is increased
Balance is upset
After spending time under pressure, quantity of Nitrogen increases in your tissues
Idea is to control amount absorbed and rate it is eliminated
11. Decompression sickness As you ascend, “outgassing” occurs
Excess nitrogen passes from the body tissues to blood to lungs and is expired
If change in pressure is sudden
Nitrogen comes out of solution suddenly
Bubbles form in body tissues
The “bends”
12. Scuba Diver Scuba Diver or Open Water Certification
PADI
Scuba Diver is pre-entry level
For vacation diving
Subprogram of Open Water Certification
Open Water Certification is basis of all certifications
13. Open Water Certification Learn fundamental knowledge and skills to dive
When finished, competent to dive in open water without supervision
Provided diving activities and areas dived are similar to those in training
Minimum age is 15yrs
Includes classroom sessions, pool sessions and open water dives
3 for PADI, 5 for NAUI
14. Open Water Certification Can dive to 60 ft
Daytime diving
Equipment:
Mask, snorkel, fins, booties
Weight belt
BC, regulator
Book packet with dive charts
15. Open Water Certification Can complete over weekend plus 2 days for open water dive
Or…can complete over several weeks, meeting 1-2 times per week plus open water dive
Not cheap
Class: $175.00
Books: $50.00
Equipment: anywhere from $50-200 depending on quality and what you buy
Open water dive: Hotel plus fee for dive ($10-15)
16. Other Certifications
Adventure Scuba Diver
Boat Diver, Underwater Naturalist, Fish Identification
Advanced Scuba Diver
5 Adventure Dives
Master Scuba Diver
Highest recreational diver level
Significant training and experience in wide variety of environments
17. Other Certifications Rescue Diver, Advanced Rescue Diver
Night Diver
Search and Recovery Diver
Underwater Ecologist
Wreck Diver
Ice Diver
Deep Diver
Cave Diver, Cavern Diver
And on and on and on……
18. http://rbdg.com/reb/dive/Cozumel2003/index.php
19. VERY(!) approximate trip costs:
Flower Garden Banks Nat’l Marine Sanctuary 2-3 night live-aboards… $325-400 all inclusive except for tips (10-15%) Trips scheduled thru local dive shops w/ any of 3 charter operators <http://flowergarden.noaa.gov>
Cozumel 7 nights w/ Buena Ventura Diving & hotel accommodations … $425 - $700 + travel, meals!
Little Cayman @ Pirates Point Resort weekly dive pkg … $1,495 + travel!
Galapagos 7 night live-aboard (Sky Dancer) … $2,695 + travel!
20. Local Dive Shops Texas A & M Galveston
Diver’s Paradise
20801 Gulf Fwy, Webster, TX
281-332-9982
Sport Divers of Houston
www.sport-divers.com
20710 Gulf Fwy, Webster, TX
281-338-1611
21. Local Dive Shops Budget Scuba
5103 East Wallisville Rd, Baytown, TX
281-421-2018
$259.00 for class, books, certification fees, rental gear for open water, pool time
Extra for equipment you buy
22. Local Dive Shops Gigglin’ Marlin Divers
2211 Richmond, Houston
281-445-3483
Sea Sports Scuba
7543 Westheimer, Houston
713-977-0028
23. Remember… When you go diving, you are usually the most dangerous animal in the water!