CCR Tech Talk: Hammerhead Rebreather Features & the SubGravity H3 Computer

Special tech episode of Pod Diver Radio, host Joe Cocozza checks in live from Beneath the Sea 2015 with SubGravity president and dedicated cave diver Josh Thornton for a deep dive into modern CCR gear. Josh shares how a childhood cenote dive in Mexico pulled him into cave diving—and how that passion now drives SubGravity's design philosophy. Together, they unpack the Hammerhead closed circuit rebreather, including: The online "Build a Rebreather" (BART) configurator that lets you spec your Hammerhead from can size to materials The removable O₂ cell cartridge pre-wired for up to four sensors, making swaps, drying and inspection easy Click-lock bayonet hose fittings that simplify setup, teardown and mushroom-valve checks—no threads, no hassle Then they turn to the H3 dive computer—a compact OLED unit developed with the Austrian military—covering: Full support for air, nitrox, trimix and CCR so you don't outgrow your computer NFC (near-field communication) logging straight to your phone for instant dive downloads and sharing The roadmap for wireless cylinder pressure and future wireless PO₂ monitoring, all enabled via firmware updates on the same unit If you're a CCR diver, a rebreather-curious OC tech diver, or a cave diver looking for robust electronics and modular life support, this Hammerhead + H3 breakdown is packed with practical, gear-nerd detail.