Seawater
COMMUNITY-POWERED MARINE NAVIGATION

Safer waters through community intelligence.

Seawater provides community-powered marine navigation through two complementary apps: Waves crowdsources depth data from boaters, while Beaches maps shoreline changes from coastal walkers. Together, they create the most comprehensive coastal intelligence system available.

Download Apps Explore Features
Free for iOS and Android. Join thousands of contributors making waters safer for everyone.
50,000+
Active Users
2M+
Depth Readings
4.8★
Average Rating
Two perspectives, one mission

Comprehensive coastal intelligence from community contributions.

Waves and Beaches work together to create the most complete picture of our coastlines — boaters map the water, walkers map the land.

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Waves
Advanced mobile boating app that crowdsources depth data to provide real-time underwater terrain visualization and safer navigation for recreational boaters.
Real-time depth data from community
3D underwater terrain visualization
Safety alerts and grounding prevention
NOAA integration and offline charts
iOS Android
⛱
Beaches
Companion app for beach walkers and coastal enthusiasts to contribute critical shoreline data, tracking coastline changes and helping create accurate navigation boundaries.
Track shoreline changes and erosion
Map coastal boundaries for navigation
Contribute during casual beach walks
Complete the water-to-land dataset
iOS Android
Key capabilities

Built for safety, powered by community.

Advanced technology meets collaborative mapping to create comprehensive coastal intelligence that keeps everyone safer on the water.

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Real-time Depth Data
Access crowdsourced depth readings from thousands of boaters, updated in real-time for the most current underwater conditions.
⛰
3D Terrain Visualization
Visualize underwater topography with stunning 3D terrain maps that reveal bottom contours and navigation hazards.
🛡
Safety Alerts
Receive instant notifications about shallow water, navigation hazards, and changing conditions based on community reports.
📍
Shoreline Mapping
Beach walkers contribute coastline data that defines accurate navigation boundaries and tracks coastal changes over time.
📶
Offline Navigation
Download critical navigation data for offline use, ensuring access to depth information even without cell coverage.
🌊
NOAA Integration
Seamlessly integrates with official NOAA charts and tide data, combining authoritative sources with real-time community insights.
Community impact

Better data through collective intelligence.

Every contribution makes waters safer for everyone. Join a growing community of boaters and coastal enthusiasts sharing critical navigation data.

Collective Safety
Your depth readings and shoreline observations help prevent groundings and accidents for the entire boating community.
Up-to-date Intelligence
Community contributions ensure navigation data reflects current conditions, not outdated charts from years ago.
Expanding Coverage
Every trip extends coverage to new areas, creating comprehensive maps where official data may be limited or nonexistent.
Free for Everyone
Both apps are completely free. The more people contribute, the safer and more accurate the system becomes for all.
Privacy Focused
Contribute anonymously while still helping the community. Your privacy is protected while your data helps others.
Two Perspectives
Boaters and beach walkers contribute complementary data, creating a complete picture of coastal environments.

Join the community making waters safer

Download Waves if you boat, Beaches if you walk the shore, or both to contribute from every perspective. Free for iOS and Android.

Download Waves for iOS Download Beaches for iOS Android Apps