IANTD Deep DECO Diver

Course Overview & Training Objectives

Operates at the 40-meter boundary but formally incorporates planned, staged decompression stops of up to 15 minutes using nitrox decompression mixtures (up to 50% O2). Unlike recreational no-stop deep courses, this qualification transitions the diver into technical decompression protocols and mandatory ceiling management. Divers calculate CNS/OTU oxygen toxicity, run-time schedules, and switch to dedicated decompression gas stages.

Operational Envelope

• Max Depth: 40m (130ft)
• Decompression: 10 minutes
• Breathing Gases: Air
• Equipment Rig: Single + Stage or Double

Course Structure & Training Requirements

• Course Duration: 3 Days
• Required Training Dives: 4 in-water dives
• Classroom & Theory: 12 hours instruction

Entry Gates & Prerequisites

Min age 18, 30 logged dives