The O2ptimaCM Checklist

A specialized checklist app for O2ptima CM rebreather divers, designed to standardize pre-dive, in-water, and post-dive procedures for safer, more efficient dives. Ready-to-use templates help you complete critical steps without missing details, while flexible customization adapts to your team, training, and gear. Works offline at remote sites, with cloud sync and export for sharing and record-keeping. Core features • Prebuilt O2ptima CM checklists for pre-dive, prebreathe, in-water checks, post-dive, and maintenance • Customizable items, sections, and mandatory steps with notes, photos, and timestamps • Offline use, automatic cloud backup, PDF/CSV export, and easy sharing with buddies or students Ideal for rebreather divers, instructors, and dive teams who want a reliable, audit-friendly process. Keywords: scuba diving app, rebreather checklist, O2ptima CM, dive safety, technical diving, offline checklist, cloud sync, PDF export

1. Download and sign up, then set your unit preferences or continue without an account for offline use. 2. Choose a checklist template such as Pre-Dive, Prebreathe, or Post-Dive, and start a new session. 3. Work through each step, ticking items as you complete them; add notes or photos where needed and mark blockers if an issue is found. 4. Customize your templates by adding or reordering items, setting mandatory steps, and creating reminders for recurring maintenance. 5. Save and export the completed checklist as PDF or CSV, sync to the cloud, and share with your buddy, team, or instructor for review.