The ERDI Tender Operations course develops the hands-on skills to tend public safety divers during active operations. You will practice umbilical and line management, established communications signals, and coordination with the diver and topside supervisor under realistic conditions.

It is designed for team members ready to tend on live call-outs and support their dive team effectively.

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