Get more from your charts with AI-powered chart explanations and route analysis.

Luna Marine Charts is a fast, modern marine navigation app built for sailors, cruisers, and recreational boaters.

Plan routes in seconds, navigate with smooth official NOAA and USACE vector charts, and access critical tides and currents 100% offline. Whether you're preparing at home, planning a coastal passage, or navigating on the water, Luna helps you stay informed and focused.

▶ Chart Intelligence AI
- Chart area overview: Understand the important features and conditions in the area you're viewing.
- Navigation hazards: Identify hazards and things to watch out for.
- Rules, depths & shoaling: Understand restrictions, charted depths, and shallow-water hazards.
- Traffic & Coast Pilot :Learn about expected vessel traffic and relevant official guidance.
- Route review: Analyze your route for hazards, restrictions, depths, and other potential concerns.

▶ Charts & Offline Navigation
- Download NOAA* Coastal and USACE** Inland River charts for offline use
- Full offline access to chart data, tide stations, and current predictions
- High-contrast Day, Dusk, and Night display modes to protect night vision
- Customizable units for depth, distance, and speed

▶ Fast Route Planning
- Tap to place, drag, or insert waypoints to edit routes instantly
- Real-time distance, bearing, and ETA calculations
- Smart Auto-Routing with Great Circle navigation support
- Seamless GPX route import and export

▶ Integrated Tides & Currents
- Tap any tide or current station directly on the map for instant forecasts
- View water level predictions and flow speed/direction in clean graph views
- Access full station metadata and daily prediction tables off the grid

▶ Live Instrument Dashboard (Pro)
- Turn your phone, tablet, or laptop into a real-time marine display
- Monitor live Speed Over Ground (SOG), Course Over Ground (COG), and GPS signal strength
- Track distance and time remaining to your active waypoint

▶ AIS Traffic & GPS NMEA Integration (Pro)
- Connect to your boat’s NMEA network via Wi-Fi or serial cable
- Overlay live AIS targets directly on your chart for enhanced collision awareness
- Stream high-accuracy position data from your vessel’s external GPS receiver

▶ GPS Track Recording (Pro)
- Record your tracks with flexible pause, resume, and multi-segment tracking
- Export tracks as GPX files to archive your logs or share with other boaters

* NOAA ENC charts are from https://nauticalcharts.noaa.gov/charts/noaa-enc.html
** USACE I-ENC charts are from https://navigation.usace.army.mil

Luna Marine Charts is not affiliated with NOAA, USACE, or any other government agency.