The ERDI Surface Supply Technician course is the advanced level of surface-supply training, certifying you as a fully proficient surface-supplied diver on demanding public safety operations. You will refine umbilical and system management, communications, emergency procedures, and team coordination, and take on a lead role topside and in the water.

It is intended for experienced divers who have completed the Operations level.

Why train with Sink or Swim Scuba

You’ll train with an instructor who spent years as a working public safety diver and still supports local dive teams today. As an authorized Interspiro distributor, we keep rental and demo equipment on hand and offer on-site demo dives, so your team can try gear before investing — and we can assist with your dive operations as you build capability. ERDI training runs across three levels — Awareness, Operations, and Technician — and we train public safety divers locally, nationally, and internationally, including teams as far away as Spain.

Explore the pathway: Training Pathway · Public Safety Diving hub · ERDI I Public Safety Diver