Njord

Status: This project is still very much a WORK IN PROGRESS.

Live Demo: https://openenc.com

Marine Electronic Navigational Chart (ENC) Server

Njord consumes S-57 IHO transfer standard for digital hydrographic data. S-57 format chart data is published by hydrographic offices such as NOAA. https://www.charts.noaa.gov/ENCs/ENCs.shtml

Njord displays ENC charts but does NOT strictly follow the IHO S-52 specifications for chart content and display.

S-52 display and S-57 data standards can be found here: https://iho.int/en/standards-and-specifications

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Development System Requirements

• OpenJDK 17
• Gdal 3.6.2 with Java bindings
  • Note: Homebrew Gdal does not come with Java bindings and the osgeo tap is broken. See docs/gdal/README.md for building gdal from source with java via brew.
• PostGIS 13
  • See chart_server_db/README.md for running PostGIS in a container for development.

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Local Development Quick Start

Bring up database

cd chart_server_db
docker-compose up

Bring up api

./gradlew :chart_server:run

Bring up front end with hot-reload

./gradlew :web:jsRun --continuous

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Prod Dry run with install dist

export JAVA_OPTS="-Dcharts.webStaticContent=$HOME/source/njord/web/build/dist/js/productionExecutable -Djava.library.path=/opt/gdal/jni"
export CHART_SERVER_OPTS="-Dcharts.adminUser=test"
./gradlew :chart_server:installDist
./gradlew :web:jsBrowserDistribution
./chart_server/build/install/chart_server/bin/chart_server

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Docs

System Design Notes

Install on Raspberry Pi

sudo apt install ./njord<version>.deb
sudo apt install ./gdal_3.10.0-1_arm64.deb
sudo systemctl enable postgresql.service
sudo bash -c "echo \"listen_addresses = 'localhost'\" >> /etc/postgresql/15/main/postgresql.conf"
sudo systemctl restart postgresql.service
sudo /opt/chart_server/njord_setup.sh