s57

GPS log file viewer and analyzer with support for GPX, TCX, KML, FIT, IGC, NMEA, SLF, SML, LOC, GPI, GeoJSON and OziExplorer files.

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

A rewrite of OpenSeaMap, using vector tiles instead of raster tiles

TypeScript parser for S-57 and S-101 marine nautical charts with S-52 symbology rendering

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.

⚓ A native chartplotter app for Mac, iPad, iPhone, Linux, and Android. S57/S101 ENCs, and raster charts, rendered directly with Metal, Vulkan, or SDL3 at 60 fps. Not for navigation.

Example usage of the Vector Charts API using Mapbox GL JS, Leaflet, OpenLayers, and other libraries.

⚓ 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.

🛥️🔦 An index of maritime lights from the US DoD

Nautical OWS

⚓ A monochrome, e-ink-first nautical chart viewer for the reMarkable tablet.

纯标准库实现 ISO 8211 解析的 S-57 电子海图（ENC）二进制解析器：物标提取 + 空间坐标解码 + 自动报告

⚓ OpenCPN plugin to render charts using tile57.

Independent MIT submarine cable route planning: WGS84 geometry, RPL, GIS, bathymetry and bounded cable research models. Windows x64 installer and manuals.