ANDI LEVEL 3 (Nitrox)
Course Prerequisite
ANDI LEVEL 2 or equivalent.
COURSE DESCRIPTION
This course offers an in depth introduction to technical diving. Students will be utilizing Trimix (for example: 21/35), Nitrox (32%) and two decompression gases (50% and 100% O2). This will allow students to expend their diving activities well beyond the recreational diving.
The emphasis of this course is to instill and develop solid critical skills. Students will improve their buoyancy, trim, ascend and descend techniques. Decompression theories and application will be reviewed.
The course places special importance on teamwork and procedures, situational awareness, dive and gas planning. Students will be challenged to effectively solve problems.
This course will help students to develop a solid foundation for more advanced technical dives.
| Max depth | 160 ft |
| Gases | 32%, 21/35 |
| Deco gas | 50/50 and 100% |
| Max ppO2 | 1.4 for back gas, 1.6 for deco gas |
| Max Deco | 30 min |
| Max total run time | 70 min |
| Student instructor ratio | 3:1 |
| Classroom time | 15-20 hours |
| Number of dives | 10-12 |
| Duration | 6 days |
TOPICS OUTLINE
- MOD, EAD, END, ppO2, FG calculations
- Gas laws
- Overview of relevant physiology
- O2 properties
- Oxygen and pulmonary toxicity, CNS clock
- CO2 and CO consideration
- DCS (causes, overview, latest theories)
- Introduction to deco planning (computers, RGBM, Buhlman, VPM)
- Minimal and omitted decompression
- Team planning
- Procedures (loss or inadequate gas supply)
- Manipulation and stowing of two deco bottles
- Basics of gas blending
- Cylinders marking
- Dive and gas planning
- Equipment (DIR considerations and emphasis)
- Valve / manifold manipulation and failures
- Line laying
- Importance of physical and mental fitness
IN WATER SKILLS
- Demonstrate excellent buoyancy skills
- Demonstrate proper trim, basic and advanced propulsion techniques
- No mask drills
- Demonstrate proper descent and ascent techniques
- Demonstrate proficiency in manipulating deco bottles and valve manipulation
- Gas switching and gas sharing
- Use of touch contact (where required)
- SMB deployment
- Management of toxing or unconscious diver
- Demonstrate good level of situational awareness
- Demonstrate excellent level of team awareness
- Demonstrate proficiency in handling single and compounded failures
- Demonstrate proficiency in line laying
- Demonstrate safe attitude
EQUIPMENT
- Double manifolded cylinder configuration
- Two deco cylinders (40cuft) with appropriate regulators and SPG with 6” HP hose
- Primary regulator (with 7ft hose)
- Back up regulator
- Back plate with one piece harness
- Wing (unbungied)
- Independent suit inflation system (Argon gas for helium mixtures is mandatory)
- Primary reel (min. 300 ft)
- Two finger spools (one for SMB, second for back up)
- Depth and time gauge
- Compass
- SMB
- Wet notes
- Spare mask
- Canister light (primary)
- Back up light
- Cutting tool
- Paddle style fins (non-split)
NOTE: Please contact your instructor prior to commencing your course if you have any questions regarding the type or suitability of required equipment.
COST
$1,100.00 (tax, manuals and gas cost not included)
NOTE: $350.00 non-refundable deposit is required for registration. The remaining amount is due in full before the beginning of the first class.
