SSI Extended Range (XR)

Course Overview & Training Objectives

The foundation of SSI's technical curriculum, qualifying divers to 45 meters (145 feet) with an accumulated decompression ceiling capped at 25 minutes. Divers train on an Extended Range Total Diving System (twinset or sidemount) with one stage cylinder carrying up to 100% oxygen for accelerated decompression, using air, nitrox, or Extended Range Trimix bottom gas.

Operational Envelope

• Max Depth: 45m (145ft)
• Decompression: Max 25 min accumulated deco stop time
• Breathing Gases: Air or Normoxic Trimix / 100% O2 Stage
• Equipment Rig: Twinset or Sidemount + 1 Stage

Course Structure & Training Requirements

• Course Duration: 4 to 5 Days
• Required Training Dives: 6 in-water dives
• Classroom & Theory: 18 hours instruction

Entry Gates & Prerequisites

Deep Diving + Nitrox + 50 logged dives (max 25 min deco)