Know what's happening with your boat.
Always.
A self-installed boat tracker with battery monitoring and water intrusion detection that owners can set up themselves in minutes. It runs on its own internal battery, only charges while the boat is running, and never drains your boat's battery. Just place it, copy over the pairing code, and go.
Up and running in minutes
No electrician. No configuration. No technical knowledge needed.
Order your device
Your KnotAWorry GPS tracker ships with a pairing card containing two unique codes. That card is all you'll ever need to link your hardware to your account.
Plug in and pair
Stick the device near the bilge and place the water monitor at the lowest point of the bilge. The tracker runs from its own internal battery and only charges while the boat is running, so it does not drain the boat's battery. Enter the two pairing codes on your account page. Your boat appears on the map immediately.
Track from anywhere
Open KnotAWorry from any phone, tablet, or computer. Live position, water depth, heading, and your full voyage history — always available.
Everything you need to keep an eye on your boat
Live GPS position
Real-time coordinates on a nautical map, updated automatically every few minutes while the device is awake.
Full voyage history
Browse every position and heading your boat has ever reported. Full paginated history, always available.
Private and secure
Your location is only visible to you. Each device uses unique keys — nobody else can send data to your account.
Any device, any browser
No app download. No install. KnotAWorry works on every modern phone, tablet, and computer through a web browser.
Heading and confidence
Heading in degrees, plus satellite count and location-confidence indicators, so you can judge how trustworthy each fix is.
Built for boats
Designed for damp, hard-to-reach spaces, with an internal battery that only recharges while the boat is running and never pulls from the boat battery at rest.
Purpose-built for marine environments
Built specifically for boats, with a sealed enclosure, simple self-install setup, and an internal battery that only recharges while the boat is running. No electrician. No battery drain while the boat is sitting.
Your boat on the map. From anywhere.
No download required. Works in any modern browser on any device.
Nautical map
GPS track plotted on OpenStreetMap nautical charts. Toggle the route line to see exactly where your boat has been.
Full reading history
Every GPS reading ever sent — with heading, satellite count, and GPS accuracy data. Paginated and always available.
Multiple boats
Manage a whole fleet from one account. Each boat gets its own map, history, and device pairing flow.
Ready to track your boat?
Get a KnotAWorry GPS device, create a free account, and be live on the map in about five minutes.