1. This Program is designed to train competent divers in the safer use and technology of the Semi-Closed Dolphin Rebreather.

1. For Semi-Closed systems, student must be a qualified EANx Diver.

2. Must be a minimum of 18 years of age.

1. IANTD Rebreather Diver Student Manual and Workbook or the IAND inc/IANTD text Understanding Rebreathers.

2. IANTD-approved text for the Dolphin Rebreather.

1. This Program must include a minimum of 240 minutes of in-water training time on the specific Rebreather model being trained on, in a combination of confined water and OW environments. A minimum of 4 OW dives, each of which is at least 30 minutes in duration, must be completed.

2. For All Rebreathers: Students must complete the text and test material associated with other units that they wish to be cross-qualified on.

1. To qualify from one Semi-closed Circuit Rebreather, or from a Closed Circuit Rebreather to another Semi-closed Circuit Rebreather, the diver must complete a minimum of 120 minutes of in-water training time with at least two open-water dives.

2. Programs for some specific Rebreather models will exceed these minimum requirements, per IANTD and specific manufacturer agreements. However no sanctioned IANTD course can be conducted without adhering to these minimum requirements.

1. Approved Dolphin Rebreather suitable for the training exposure.

1. There may be no more than 4 students per Instructor.

2. No dives may be conducted to depths greater than 130 fsw (39 msw).

3. Inspired oxygen partial pressure may not exceed 1.40 ATA or manufacturer specifications (whichever is lower) during dives, and the oxygen partial pressure of the active diluent/supply may not exceed 1.60 ATA at the MOD of the dive.

4. All dives must be completed within the IANTD oxygen CNS% limits.

5. The instructor may use a Rebreather or OC during training sessions. It is recommended that the instructor use the Rebreather at all times to demonstrate skills and be able to monitor the student. .

6. All appropriate safety or required decompression stops must be performed.

1. A confined water session to must be completed before conducting any OW dives.

- Pre-dive checks.
- Pre-dive breathe.
- Switch to low set point for descent (CCR only).
- Switch to higher set point once the diver is at the planned dive depth or set point change depth (CCR only).
- In water leak and buddy leak check. If conditions prohibit this after entry this then immediately upon arrival at a stable depth. Where practical this may be accomplished between just below the surface to 20 fsw (6 msw) deep.
- Descend and insure gas addition is made.
- Open Circuit bailout (static and dynamic drills, including at least two OC ascents to approximately 20 fsw (6 msw).
- Buoyancy and trim.
- Handset/computer/pendant/gauges, etc., operation.
- PO₂ gauge monitoring to be done no more frequently that once a minute and no less often than once every four minutes (CCR only).
- Hypoxia (static and dynamic drills).
- Hyperoxia (static and dynamic).
- Hypercapnia (static and dynamic).
- Flood recovery (static and dynamic).
- Buoyancy and trim on the bottom during ascent and at safety or
  required stops.
- Hypoxia due to Solenoid stuck in closed position.
- Dive the unit manually.
- Minimum Loop Volume (CCR and passive SCR).
- Carry off-board bailout cylinder on a minimum of three dives.
- SCR mode of diving.
- SMB Deployment.