Sea Chart

Sea Chart is an offline nautical navigation app designed for sailors and boating enthusiasts. Download chart data for your region and use all features even without internet at sea.

Key Features:

◆ Offline Nautical Charts

Detailed nautical charts covering 30+ countries and regions, including New Zealand, Australia, Japan, South Korea, Southeast Asia, India, Middle East, Europe, Americas and more. All chart data can be downloaded for offline use with resume support.

◆ Seamark Identification

Tap any seamark on the map to view detailed information, including buoys, lighthouses, anchorages, fairways, restricted areas, berths and dozens of other international seamark types.

◆ Anchor Watch

Set your anchor position and monitoring radius. When your vessel drifts beyond the set range, the app alerts you with vibration and notifications — even while running in the background.

◆ Real-time GPS Tracking

Live display of your current position and sailing speed. Switch between Knots and km/h speed units.

◆ Distance Measurement

Tap multiple points on the map to measure route distances for voyage planning.

◆ Save Locations

Save frequently used anchorages, berths, and points of interest locally for quick access.

◆ Multi-language Support

Available in 20+ languages including English, Chinese, Japanese, Korean, French, Spanish, Arabic and more.

◆ Points of Interest

View nearby facilities including harbours, marinas, fuel stations, restaurants, hospitals, banks and more.

Coming Soon:

• Weather Data — Real-time marine weather forecasts including wind, wave height, and precipitation

• Route Navigation — Set a destination and get automatic route planning with turn-by-turn guidance

• Custom POI Markers — Add custom markers with notes on the map and share with other users

• Cloud Sync — Sign in with Google to sync saved locations across multiple devices

Use Cases:

• Sailing and yacht cruising

• Coastal and offshore voyage planning

• Overnight anchoring safety monitoring

• Fishing boat navigation

• Coastline exploration and water sports

Sea Chart — Your portable nautical assistant for safer voyages.