Receive, log, and alert on DSC (VHF digital selective calling) calls — distress, urgency, safety, routine — from NMEA 0183 ($CDDSC/$CDDSE) and NMEA 2000 (PGN 129808).

Imports points of interest from Garmin ActiveCaptain, OpenSeaMap, the USCG Light List, USCG Local Notices to Mariners, NOAA ENC Direct, NOAA CO-OPS, the NGA World Port Index, and USACE as Signal K notes resources, with proximity, route-corridor, and bridg

Signal K plugin that runs a Rust container alongside the server for a boat-wide tile cache, a PMTiles chart provider, and saved downloadable map regions.

Signal K server plugin to convert Signal K to NMEA0183

NMEA 2000 to SignalK conversion library

A node.js/javascript parser for NMEA0183 sentences. Sentences are parsed to Signal K format.

WebGL chartplotter for Signal K

Signal K server plugin and read-only WebApp converting navigation data to SeaTalk1 with coherent settings, waypoint, units, lights, diagnostics, and calibration advice

Various utilities for transforming NMEA0183 units into SI units for use in SK.

Plugin to convert NMEA2000 AIS to NMEA 0183

Course data provider plugin for SignalK Server.

Signal K plugin: keyless Open-Meteo, Met.no, or AccuWeather marine weather as 30+ environment deltas, severe-weather notifications, NMEA2000-ready

SignalK Nautical Route Planner - Offline tide and vessel-aware routing

Signal K server plugin to convert Signal K to NMEA2000

Utilities for handling streams of Signal K data

OpenRouter-powered LLM analyzers for Signal K: plain-prose engine, battery, and weather reports. OpenRouter API key required.

SignalK specification schema as an npm module with tests

Auto-discovers and connects to a RaceBox Mini or Micro over BLE, sending high-precision IMU, GNSS, and calculated wave data to Signal K.

Signal K instrument panel implemented as an HTML5 grid with draggable & resizable widgets

Search and filter points of interest (Signal K notes) on plotterExtensions-capable chartplotters