https://github.com/kupofty/openseanav

Display and forward NMEA data
https://github.com/kupofty/openseanav

cpp nmea nmea-data nmea-parser nmea0183 qt-gui qt6

Last synced: about 1 month ago
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Display and forward NMEA data

• Host: GitHub
• URL: https://github.com/kupofty/openseanav
• Owner: Kupofty
• License: apache-2.0
• Created: 2025-06-18T21:24:05.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2025-09-22T19:47:54.000Z (9 months ago)
• Last Synced: 2025-09-22T21:26:11.913Z (9 months ago)
• Topics: cpp, nmea, nmea-data, nmea-parser, nmea0183, qt-gui, qt6
• Language: C++
• Homepage:
• Size: 2.01 MB
• Stars: 0
• Watchers: 0
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          


  



## Overview

OpenSeaNav is a versatile tool for marine navigation and monitoring, designed for NMEA0183-compatible devices. 

It enables real-time display, logging, and forwarding of navigation data with integrated map visualization, using free and open-source charts.

## Screenshots

**Map & Navigation View**  

![NMEA Center Map](resources/pictures/git_repo/map_view.png)

**Data Monitoring & Widgets**   

![NMEA Center Widgets](resources/pictures/git_repo/data_widgets.png)

## Features

### NMEA Device Connection

- Connect any NMEA0183-compatible device via Serial, TCP, or UDP.  

- Supports multiple simultaneous device connections.

### NMEA Monitoring

- Display both raw NMEA sentences and decoded data in real-time.  

- Supports standard sentences including GGA, RMC, GSV, and more.  

- Live updates of position, heading, speed, and other navigation metrics.

### Map Display

- Integrated OpenStreetMap panel shows live boat position.  

- Tracks routes, heading, and course over ground.  

- Overlay options include OpenSeaMap nautical charts.  

### Data Forwarding

- Forward received NMEA data to UDP and/or secondary serial ports.  

- Supports multiple targets and protocols simultaneously.

### Selective Output Control

- Filter sentence types per output stream.  

- Forward only selected sentences (e.g., GGA, RMC) to different outputs.

### Data Logging

- Record received data in multiple formats: TXT, CSV, NMEA, LOG.  

- Timestamped logs for historical review and analysis.  

### User Interface

- Live dashboards and widgets for quick overview of navigation data.  

- Configurable panels for both map and raw/decoded data views.  

## Configuration Overview

- Input: Serial / TCP / UDP

- Output: Serial / UDP / Logs

- Map & Layer: Internet connection

## Project Status

OpenSeaNav is a non-commercial personal project created for learning purposes and to support the marine and open-source community. 

Many improvements and new features are expected as the project evolves.

## Contributing

- Contributions are welcome via Pull Requests.

- Report bugs and feature requests in the GitHub Issues section.

- Use the GitHub Discussions section for questions, ideas, and general discussion.

## Supported Platforms

- Windows 10/11

- Linux

- macOS (not tested)

This software is built with Qt, so it should be compatible across all three platforms.  

However, prebuilt releases are currently provided only for Windows and Linux.

## Dependencies (Qt6)

- Core, Gui, Widgets

- SerialPort, Network

- Quick, Location, Positioning

## Data Sources & Attribution

- Thunderforest (https://www.thunderforest.com)

- OpenStreetMap (www.openstreetmap.org)

- OpenSeaMap (www.openseamap.org)

## Disclaimer

This software is not certified for navigation.  

Charts and data are provided for informational purposes only and must not be relied upon as a primary means of navigation.

## Licence

This project is licensed under the Apache License 2.0   

© Kupofty 2025-2026.

You are free to use, modify, and distribute the software, provided proper attribution is included and the license terms are followed. 

See the LICENSE file for full details.