There is also an online version you can use: https://solodiver.damon1974.com Thanks.

Solo Dive Gas Planner - SDI RDP

A desktop application for planning solo dives using SDI (Scuba Diving International) Recreational Dive Planner methodology. Calculate nitrogen loading, gas consumption, and multi-profile dive plans.

Features

• Multi-Profile Planning: Plan up to 5 dive profiles plus mandatory safety stop
• SDI RDP Integration: Full implementation of SDI nitrogen tracking tables
• Gas Consumption: Real-time tank pressure calculations with multiple tank types
• Dive Factors: Pre-configured workload multipliers (Easy, Moderate, Tough, Stressful, Severe)
• Dark/Light Themes: System-aware theming with manual override
• Update Notifications: Automatic GitHub release checking

Installation

Windows

1. Download the latest .exe from Releases
2. Run the executable (no installation required - portable app)

Usage

1. Configure dive parameters:

   • Select number of profiles (1-5)
   • Choose tank type or enter custom capacity
   • Set your SAC (Surface Air Consumption) rate
   • Select dive factor based on expected workload

2. Enter dive profiles:

   • Depth (ft) for each profile
   • Duration (min) at each depth
   • Safety stop (15ft, 3min) is automatic

3. Review calculations:

   • RNT: Residual Nitrogen Time carried from previous profile
   • TBT: Total Bottom Time used for pressure group lookup
   • NDL: No-Decompression Limit at current depth
   • ATA: Atmospheres Absolute (pressure at depth)
   • Gas consumption in cubic feet and PSI

SDI RDP Methodology

This application implements the SDI Recreational Dive Planner tables:

• Group Designation Table (GDT): Maps dive time to pressure groups A-Z
• Residual Nitrogen Time (RNT) Table: Carries nitrogen loading across profiles
• Multi-level dive calculations: Cumulative nitrogen tracking through ascent profiles

Important Notes

• Always ascend between profiles (multi-level diving)
• Safety stop is mandatory for all dives
• Maximum 5 profiles per dive plan
• Consult SDI training materials for proper dive planning procedures

Development

Built with Electron for cross-platform desktop deployment.

Setup

npm install
npm start

Build

npm run build:win    # Windows executable

Technical Details

• Architecture: Secure Electron with context isolation
• Data: SDI RDP tables (JSON format)
• Security: No Node.js access in renderer, IPC-based communication
• Update System: GitHub Releases API integration

License

GPL-3.0 - See LICENSE file for details

Author

Developed by Damon Downing, 2026

Disclaimer

This software is a planning tool only. Always follow proper dive training, certification requirements, and safety procedures. Solo diving carries inherent risks - ensure proper training and equipment before attempting solo dives.

Support

Report issues: GitHub Issues