SSI Extended Range XR45 at Dive Rutland

SSI Extended Range Course XR45

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SSI Extended Range Course XR45m

The SSI Extended Range Trimix program provides divers with the training necessary to independently plan and conduct limited decompression dives to a maximum depth of 45 meters, using decompression mixtures of up to 100% oxygen and specialised diving equipment and procedures, for a maximum accumulated decompression time of 25 minutes, with an equally-qualified dive buddy.

This course can be done in Twinset or Side Mount configuration and completed 
using Trimix to reduce the effects of narcosis.

Prerequisites for the SSI Extended Range Course:

  • Certification Level: Deep Diving and Enriched Air Nitrox 40% certification & if using a sidemount configuration for the course then Recreational Sidemount Diving course or other agency equivalent
  • Have logged at least 50 dives or be certified in Extended Range Nitrox Diving.
  • Classroom: 1 day
  • Open Water Dives: 3 days (if completing Trimix Option)
  • Maximum Training Depth: 45 meters 
  • Suggested Duration: 18 hours

All dives must be completed using a complete Total Diving System:

Twinset Total Diving System

  • A Backplate or soft pack with harness
  • A Buoyancy wing with appropriate liffing capacity for the planned dive
  • One delivery system that has a regulator with a 2.1 metre hose with attached boltsnap (we recommend Xdeep Small), primary inflation LPI Hose
  • One delivery system that has a regulator with a 56cm hose, neck retainer, and an attached SPG on a 56cm hose with attached boltsnap (we recommend Xdeep Small)
  • One set of double cylinders with an isolation manifold (we recommend ECS cylinders flat bottom without boots)
  • Appropriate weight system (Tail weight and / or V weight)


Sidemount Total Diving System

  • Buoyancy compensator with sufficient lift capacity for the planned dive
  • An industry-approved Sidemount harness
  • One delivery system that has a regulator with a 2.1 metre hose, 15cm inflator for Drysuit
  • One delivery system that has a regulator with a 50cm to 75cm hose and neck retainer and 15cm BC hose
  • Two cylinders with independant valves
  • Submersible pressure gauge with a 15cm high-pressure hose (all cylinders must have an SPG attached)

Both Total Diving Systems with

  • A single stage cylinder with regulator with:
    • Second stage regulator with 100cm - 110cm hose and SPG on 15cm hose. Oxygen cleaned with stage kit
  • Dive computer that is Trimix compatible and you know how to use! with Manual on your phone to be able to reference if required.
  • Backup computer or depth gauge and timing device, in the event of a computer failure
  • 2 masks (also double ended boltsnap to attach spare mask in your pocket)
  • Fins (spare straps)
  • Exposure suit appropriate for the environment
  • If doing Trimix option then a suit inflation system will also be required
  • 2 surface marker buoys for deploying from depth (red and yellow surface marker buoys - UK) - (ensure they can be attached in your pockets with appropriate boltsnaps)
  • 2 Spools or reel appropriate for the planned dive depth (ensure they can be attached in your pockets with appropriate boltsnaps)
  • 2 Cutting devices
  • Surface signaling device (whistle or similiar)
  • Logbook (available in SSI app)
  • Extended Range Dive Planning Sheets, and either wet notes or slate for dive plans

During the course you will complete a day's academic development classroom session. You must complete an Extended Range Diving final exam with a passing score of 80% and the Extended Range Trimix Exam with 80% if qualifying with Trimix. Be able to independently plan a full dive plan using the Extended Range Dive Planning sheet.

Open Water training days will be at a local inland diving site - Stoney Cove and Water Swallows

  • Dives 1 and 2 must be conducted at depths no deeper than 30 meters.
  • Dives 3 and 4 must be conducted at depths between 30m and 40m.
    One dive must be to a minimum of 40m for certification.
  • Dives 5 and 6 are between 30 and 45m

How it works:

  • Academic Development: You will be provided with the elearning materials to view the course on to start your online theory. 
  • You will have one day scheduled for in person classroom and equipment configurations
  • One pool session for the swim test and development of trim, buoyancy, and propulsion
  • Three Days in Open Water

You will be assigned and sent an email to view the course materials on to start your academic development. We will schedule 1 day to complete the first part of the academic development and kit configuration session. The Pool session will contain the swim test and development of trim, buoyancy, and propulsion. 2 days of Open Water will be the bulk of the program, with further academic development session to be scheduled. Thorough de-briefing and feedback will be given at the end of each day.

Course details:

  • Certification lasts for life
  • We can hire you your kit but the benefit from this course comes by configuring your own equipment.
  • All Learning Materials are included
  • All Pool fees are included (if required) but entry to open water sites is not.
  • All consumables (nitrox and trimix) are extra.
  • We are committed to your success, if you require more help we are there for you.
  • All courses are performance based, if you require additional dives to complete the program these may be at an additional cost.

Extended Range (with or without Trimix) certification entitles the holder to dive using specialised diving equipment and procedures to depths of up to 45m and requiring staged decompression stops of no longer than 25 minutes, providing that dives are conducted in environments similar to those of the diver's training and experience.

This is a performance based course and failure to meet the performance requirements will result in additional time being charged at the technical day rate

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