bolo Knows the Water.
Much of today's chart data is 30–40 years old, and even with NOAA's latest efforts—AI satellite imagery, green sonar lasers, and saildrone surveying—updated U.S. coastal maps won't be complete until 2041. That's a lot of coastline to worry about. bolo fills the gap with real-time, crowd-sourced reports from boaters like you—so you always have current conditions before you leave the dock.
bolo is a situational awareness tool, not a navigational replacement.
bolodoes not route a path or chart waypoints. Our focus is real-time, crowdsourced waterway reporting and alerting — not charting or routing. Other apps and chart plotters handle that well (you've probably already paid for one). Because we don't worry about depths, channels, or boat type, bolo stays free and globally relevant.
From Annapolis to Sydney Harbour
Boaters around the globe use bolo to share real-time conditions on the water.
How it works
Three steps. Everyone on the water benefits.
Spot it
See a hazard, a manatee, a packed sandbar, or a fuel price worth sharing? Open bolo.
Tap to report
Long-press the map to drop a pin at the exact spot, pick your report type, then tap submit. Takes seconds. No other boating app is this simple.
Boaters nearby get alerted
Mariners in your radius see it on the map and get a proximity alert — so they know before the bow hits.
See bolo in Action
Watch how boaters use bolo to stay informed and keep each other safe on the water.
Report Types
What Can You Report?
With bolo, it's easy to be a good samaritan on the water. Long-press the map at the exact location, select report type, then press submit. No other water app is that easy! Report floating debris before it damages someone's hull, warn fellow boaters about a crab pot in the channel, share a dolphin sighting — or post the fuel price at your marina. Every report helps the boating community stay safe and informed.
Reputation System
Level Up on the Water
Your reputation grows as other boaters confirm your reports. Higher levels unlock more report types, map editing, and carry greater weight in bolo's confidence system.
- No account required — available on first launch
- View the live map
- Confirm existing reports
- Create an account & verify your email
- Submit hazard, condition, social & wildlife reports
- Highlight restaurants on the map
- Submit tips for marinas, bridges & locks
- Search locations
- Proximity alerts & weather banners
- Add fuel docks, anchorages, boat ramps & pump-outs
- Update fuel prices
- Reports carry extra weight in confidence scoring
- Report shoaling — the most critical depth hazard
- Highest community trust weight
Points are earned when your reports are confirmed by other boaters. Confirming others' accurate reports earns points too.
FAQ & Support
Find answers to common questions about bolo.
