LightKeeper
LightKeeper 2.1.9 · by Evan Isakson

Every aid to navigation. One tap away.

For Coast Guard Aids-to-Navigation crews: all 54,000 lights and buoys on one map, with the boat ramps, hotels, tides and weather around them. Plan trips and take it on the water, even with no signal.

Open LightKeeper → Windows app — coming soon
SCROLL
Light List · what it does

Every light, and what's around it.

  1. 001

    Every aid

    All lights and buoys from the USCG Light List, in every district. Search by name or number.

    Fl G 4s
  2. 002

    Ramps and hotels

    Boat ramps, marinas and places to stay near each light, with a phone number you can tap.

    Fl R 4s
  3. 003

    Water and weather

    Tides, river levels, dams, water temperature and the forecast.

    Iso W 6s
  4. 004

    Charts

    NOAA nautical charts, satellite and street maps, and a tool to measure distance.

    Q G
  5. 005

    Trip planner

    Pick the lights; it plans the days, the ramps and where to stay.

    Fl R 2.5s
  6. 006

    Works offline

    Save your district before you go. It keeps working with no signal.

    Fl Y 4s
On the map

Tap a light. See the whole day.

The ramp to launch from, a hotel for the night, the tide, the wind and the water temperature, all in one card.

LightKeeper · Lower River · 2-day trip
Two editions

Use it in the browser, or install it.

Live

Web edition

Runs in your browser, on a computer or a phone. Add it to your home screen and save your district to use it with no signal.

Open LightKeeper →
Coming soon

Windows app

The same app for Windows. Keeps everything on your computer, so it runs with no connection at all.

Download the latest release →

CAUTIONNot for navigation. Data from USCG NAVCEN, OpenStreetMap, NOAA, USGS, the National Weather Service, Open-Meteo, Overture Maps and Esri; see data sources and notices.

ISO W 6S

Open LightKeeper.

Works in any modern browser, including on phones.

Open LightKeeper → Windows app — coming soon