Try SCR (Horizon)

Are you ready to leave your heavy scuba tank behind? The SSI Try SCR course offers an introductory experience with scuba rebreathers using a Mares Horizon semi-closed rebreather in a pool/confined water environment. There is an optional open water experience dive as well. See what semi-closed rebreather diving is all about today!

What Will You Learn?

For divers seeking to leave their large scuba tank behind, sign up for an SSI Try SCR Diving experience today! In this introductory SCR course, you will try a revolutionary semi-closed rebreather with a system that is easy to use, natural to dive, and designed with all levels of diver in mind. The Mares Horizon is in a class of its own amongst scuba rebreathers.

Enjoy a new experience diving with fewer bubbles, improved buoyancy, and increased dive time. The Mares Horizon semi-closed rebreather is the perfect companion for avid photographers and wildlife enthusiasts. Get up close and personal with marine life; Try SCR Diving today!

What Will You Do?

  1. Complete the Pool/Confined Water Sessions with your SSI Dive Professional

Course Prerequisites

Minimum Age: 16
Certification Prerequisites: None
Academic Sessions: NA.
Pool/Confined Water Sessions: 1
Open Water Dives: NA
Maximum Training Depth: NA.
Suggested Duration: NA.

Equipment Requirements

SCR Total Diving System

  • A semi-closed rebreather that has CE-type and SSI approval

A single bottom gas cylinder (minimum volume: 5.7 liters) and bailout regulator with:

  • Second stage with 1- to 2-meter hose and SPG
  • Low-pressure inflator hose or quick-connect compatible with the unit
  • Oxygen cleaned as required


  • Mask
  • Fins
  • Exposure suit appropriate for the environment
  • A backup buoyancy device: dry suit or lift bag
  • 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
  • Manufacturer and/or SSI Pre-Dive Checklist

*Equipment will be provided by your Dive Centre. We recommend that you should get your own gear once you become a certified diver.

Want to know more?

    You Might Be Interested In

    Dive into the world of rebreathers with this entry-level semi-closed rebreather (SCR) course. Learn how to independently plan and conduct...
    Do you dream of the underwater silence CCR diving can bring? The SSI CCR Diving program provides the knowledge and...