XR Nitrox (130feet – 15min deco)

For bookings and more info, call the store:
617-277-2216

The SSI Extended Range Nitrox Diving program, or XR Nitrox, provides divers with the training necessary to independently plan and conduct limited decompression (15 minutes or less) dives to a maximum depth of 130 feet, using decompression gas mixtures of up to 50% and technical diving systems and procedures in the equipment configuration used during the program with an equally- or more-qualified team. The XR Nitrox diving program is the entry-level program into decompression diving. This course is a fantastic initiation into back-mount twins, stage cylinder rigging, mounting, and use as well as technical diving systems, operations, and decompression procedures.

 

Why learn decompression?

learning to use proper planning and procedures for modern decompression diving can open a world of opportunities that no-stop divers or “Sport Divers” just don’t have access to. It can mean the ability to venture deeper with assorted mixed gasses but often it means being able to spend more time on the deeper dives you already do and love. The absolute most time a no-deco or “sport diver” will get at 100 – 130 feet is in the 10 – 15-minute time range. planning and properly executing a decompression profile will get you significantly more time.

As an example… Using a VPM planner, we plan a first dive of the day to 100 feet using 32%. On this dive, we can now do 20-minutes staying at 100 feet without deco. If we allow up to 15 minutes of deco on the same dive using 50% for our decompression mix we can now do a 45-minute dive at 100 feet! And that’s if you want to spend ALL of your time at the deepest point. For most purposes, Planned decompression will open up an incredible amount more time at depths up to 100 feet and those advantages continue as you go deeper. Being able to spend 3 times the amount of time a sport diver can in a single dive is quite a bit of fun. That’s why it’s so much of an advantage to learn to do decompression.

Before Class

  • Minimum age of 18
  • Diving medical signed by an MD

AND

  • Minimum of 24 logged dives
  • Certified Deep Diving
  • Certified Basic Nitrox (up to 40%)

IF CONDUCTING THE PROGRAM IN SIDEMOUNT

  • Certified Sidemount Diving

Minimum Extended Range Single Cylinder Total Diving System:

  • Buoyancy compensator including power inflator and D-rings appropriate for stage cylinders
  • Delivery system with a primary (6 to 7-foot hose is recommended) and an alternate air source
  • Primary cylinder (high capacity is recommended if using a single cylinder)
  • Submersible pressure gauge (all cylinders must have an attached SPG)
  • Integrated depth gauge and timing device or dive computer (dive computer recommended)
  • Redundant "bailout" bottle of the appropriate size with a delivery system and SPG to support rock bottom air sharing ascent (40cf  rear "pony" mount recommended)
  • Single-stage cylinder with a delivery system and SPG

And

  • Mask
  • Fins
  • Exposure suit appropriate for the environment
  • A cutting device
  • One signaling device for deploying from depth (red surface marker buoy is recommended, but follow local guidelines)
  • A reel or spool (appropriate for the maximum planned depth)
  • One surface signaling device (whistle or similar)
  • Logbook

Minimum Twinset Total Diving System:

  • A backplate or soft pack with a harness
  • A buoyancy wing with appropriate lifting capacity for the planned dive
  • One (1)  delivery system that has a regulator with a 6 - to 7-foot hose and metal bolt-snap
  • One (1) delivery system that has a regulator with a 20 to 30-inch hose, neck retainer, and an attached SPG
  • One (1) set of twinset cylinders with an isolation manifold
  • Two (2)  integrated depth and timing devices or dive computers
  • Stage cylinder(s) with delivery systems that each have a 6 to 10-inch hose and attached SPG
And
  • Two (2) masks
  • Fins
  • Exposure suit appropriate for the environment
  • Two (2) cutting devices
  • A compass
  • Two (2) signaling devices for deploying from depth (red and yellow surface marker buoys are recommended, but follow local guidelines)
  • A reel or spool (appropriate for the maximum planned depth)
  • One surface signaling device (whistle or similar)
  • Extended Range Dive Planning Sheets, and either wet notes or slate for dive plans
  • Logbook

 

Minimum Extended Range Sidemount Total Diving System:

  • Industry approved sidemount harness with appropriate lift
  • One delivery system that has a regulator with a 6 to 7-foot hose and breakaway attachment
  • One delivery system that has a regulator with a 20 to 30-inch hose and neck retainer
  • Two cylinders with independent valves appropriately configured for sidemount
  • Submersible pressure gauge with a 6 to 10-inch high-pressure hose (all cylinders must have an SPG attached)
  • Two (2) depth and timing devices or dive computers
  • Stage cylinder(s) with delivery systems that each have a 6 to 10-inch hose and attached SPG
And
  • Two (2) masks
  • Fins
  • Exposure suit appropriate for the environment with appropriate ballast
  • Two (2) cutting devices
  • A compass
  • Two (2) signaling devices for deploying from depth (red and yellow surface marker buoys are recommended, but follow local guidelines)
  • A reel or spool (appropriate for the maximum planned depth)
  • One surface signaling device (whistle or similar)
  • Logbook (physical or digital)
  • Underwater writing tool plus dive planning sheets

NOTE:

Additional:

  • Mask
  • Cutting Device
  • Compass
  • Signaling Device (DSMB)

Only required if progressing to Extended Range or beyond.

  • Minimum of five (5) days of training
  • All academic sessions and online training
  • Extended Range Nitrox final exam with a passing score of at least 80%
  • Equipment configuration session
  • A complete dive planning session including at least one (1) complete decompression plan used during training
  • Water fitness evaluation
  • One (1) pool/confined water skill development session of 60 minutes or more
  • One (1) half-day shallow open water environment (Pond) development session of 90 minutes or more
  • Four (4) open water training dives (this is the average time it takes to complete this program. Any additional training needed will be at a pro-rated fee)
  • Maximum of four (4) students per instructor (3 students if participating in the Extended Range add-on)

Extended Range Add-on

The Extended Range course add-on expands upon the Extended Range Nitrox Diving course to include skills and techniques used in advanced decompression diving. These skills are specifically focused on the needs of deep decompression divers. The most obvious being the use of up to 100% oxygen in the decompression stage gas and decompression limits up to 25 minutes. Skills introduced in the Extended Range Add-on include:

  • Advanced propulsion & ascent techniques
  • Managing entanglements
  • Guideline use
  • Advanced stage cylinder management
  • Regulator failures and shut-down scenarios
  • Stage cylinder failure scenarios
  • Mask failure
  • Advanced decompression techniques

 

Also, this add-on includes the following additional sessions:

  • Two (2) academic training sessions
  • One (1) pool/confined water skill development session of 60 minutes or more
  • One (1) half-day shallow open water environment (Pond) development session of 90 minutes or more
  • Five (5) open water training dives (this is the average time it takes to complete this program. Any additional training needed will be at a pro-rated fee)