A concise ChartPlotter/Navigator. A cross-platform ship-borne GUI application supporting * GPS/GPDS Postition Input * BSB Raster Chart Display * S57 Vector ENChart Display * AIS Input Decoding * Waypoint Autopilot Navigation

CAN Boat provides NMEA 2000 and NMEA 0183 utilities. It contains a NMEA 2000 PGN decoder and can read and write N2K messages. It is not meant as an end-user tool but as a discovery mechanism for delving into NMEA 2000 networks.

With BBN OS you can build a central boat computer. BBN OS is free and open source. It is based on commonly used community supported open source projects such as SignalK, PyPilot, OpenCPN, and others. BBN OS graphical user interface will let you build a cockpit front-end to all functionality of the OS from chartplotting, dashboards, weather, etc.

Java Marine API - NMEA 0183 library for Java

M5Stack Tough (ESP-32) Sailing Instruments Display and Autopilot Control

Main OpenPlotter app

Display Ships in TAK - AIS to TAK Gateway

Lysmarine is build with the stability of the raspbian operating system to provide an easy to use, stable, low-cost navigation computer for boats.

Tool to create and convert BSB / KAP charts

Weather Routing plugin for OpenCPN

Raspberry PI based boating system with offline maps, navigation, logbook and much more.

Universal 16-channel analog marine gateway for boats with legacy VDO sensors. Connects analog instruments to MQTT and Signal K without sensor replacement. ESP32-based, open source, modular mini-board system.

GPX Files for OpenCPN

Weatherfax Plugin for Opencpn

This repository is meant for supporting SKipper and filling issues with SKipper.

Decode NMEA 2000 marine CAN bus messages into strongly typed Go structs with support for multiple sources and CEL filtering

climatology plugin for opencpn

A Beachin Time

Submarius — water-clarity forecasts, bite scores, and a single GO/NO verdict for spearos, divers, anglers, and boaters. Public docs and methodology. App: https://submarius.com