SSI Hypoxic Trimix

Course Overview & Training Objectives

SSI Hypoxic Trimix represents the summit of open-circuit Extended Range diver training, extending operational depths to 100m (330ft). Divers master hypoxic breathing gases that cannot support life at the surface, managing travel gas switches during descent and ascent. The course equips divers with multi-stage team gas management, isobaric counterdiffusion mitigation, and advanced decompression algorithms for massive decompression obligations.

Operational Envelope

• Max Depth: 100m (330ft)
• Decompression: Unlimited accelerated deco
• Breathing Gases: Hypoxic Trimix (<18% O2); designated travel gases and 3+ deco stages up to 100% O2
• Equipment Rig: Twinset or Sidemount + 3+ Stages

Course Structure & Training Requirements

• Course Duration: 5 to 7 Days
• Required Training Dives: 6 in-water dives
• Classroom & Theory: 20 hours instruction

Entry Gates & Prerequisites

Technical Extended Range + 100 logged dives (30 >30m, 10 >45m)