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

SunKit is a Swift library which uses math and trigonometry to compute several information about the Sun.

A PHP library for calculating distance between two or more latitude/longitude coordinates.

Computes Sunrise / Sunset times in C#. Also computes civil, nautical and astronomical twilight. This is the C# implementation of Paul Schlyter's sunriset.c.

Nautical Object Detection using Detectron2 for Instance Segmentation Trained on Nautical Objects (buoys, ships and land).

ArcGIS Maritime server sample Custom Symbology configuration to display ENC (Electronic Navigational Chart) data with INT1 chart symbols.

A low cost Arduino implementation of an AIS receiver displayed in radar like style on a Raspberry Pi Pico

天津大学电子海图控件/S-57 Electronic Chart Control developed by Tianjin University

Tools to produce vector tiles from Electronic Navigational Charts

⚓ A high-performance, low-memory S-57/S-101/raster chart engine: vector tiles, S-101 styles, PNG, PDF, and C API.

very lightweight coding agent orchestration on top of exe.dev or sprites.dev

ASCII art tide tracking in the terminal. Half functional tool, half ambient display.

Daylight - is a tiny JavaScript library for basic sun/moon position/times/phase calculations.

IHO S-101 (ENC) GDAL/OGR vector driver.

Advanced anchor watch manager for Signal K — drift/AIS/grounding alarms, shelter forecast, IHM Spain tides, multi-device, offline MBTiles

⚓ Marine chart plotter in Go — bakes NOAA S-57 or S-101 ENCs into S-101-portrayed vector tiles and serves them offline from your laptop or a Pi on the boat.

A nautical-themed map with depths, seamarks, and hazards

Navigate your vessel through choppy seas alongside your crew on an unforgettable voyage splitting payments.

Connects NMEA2000 boat network to ioBroker