If you’re into boating or fishing, you’ve probably come across the terms chartplotter and fish finder. While they may look similar, these two marine electronics serve very different purposes.
So, which one do you actually need? Should you get a chartplotter for navigation, a fish finder to locate fish, or both? In this guide, we’ll break down the chartplotter vs fish finder debate, explain their differences, and help you decide which device best suits your needs.
What is a Chartplotter?
Think of a chartplotter as your boat’s GPS navigation system. It helps you map out your routes, mark important waypoints, and navigate safely through unfamiliar waters.
How Does a Chartplotter Work?
A chartplotter receives signals from GPS satellites to determine your boat’s precise location. It then overlays this information onto digital nautical charts, giving you a real-time view of your position on the water.
Key Features of a Chartplotter
- Electronic Charts & Mapping – Displays detailed marine maps, including water depth, hazards, buoys, and marinas.
- Waypoint & Route Planning – Allows you to set waypoints for fishing spots, docking locations, and safe routes.
- Radar & Autopilot Integration – Advanced chartplotters can connect to radar systems, autopilots, and AIS (Automatic Identification System) for safer navigation.
- Wireless Networking – Some models sync with your smartphone or tablet for remote monitoring and updates.
Who Needs a Chartplotter?
If you navigate offshore, fish in large bodies of water, or need detailed mapping, a chartplotter is a must-have. It’s perfect for:
✔️ Boat owners looking for precise navigation.
✔️ Sailors & offshore anglers who need detailed nautical charts.
✔️ Commercial fishermen who want to track routes efficiently.
What is a Fish Finder?
As the name suggests, a fish finder is designed to help you find fish. It uses sonar technology to scan underwater structures, detect fish, and measure water depth.
How Does a Fish Finder Work?
A fish finder sends sonar waves into the water, which bounce back when they hit an object (like a fish, rock, or seabed). The device then converts this data into a visual representation on the screen, helping you identify where fish are hiding.
Key Features of a Fish Finder
- Sonar Imaging (CHIRP, DownScan, SideScan) – Advanced sonar options provide high-resolution images of fish and underwater structures.
- Fish Targeting – Some models display fish icons instead of raw sonar returns, making it easier to identify fish.
- Depth & Temperature Readings – Displays water depth and temperature, helping you locate fish in the ideal conditions.
- Waypoint Marking – Some fish finders come with built-in GPS, allowing you to mark hotspots and return later.
Who Needs a Fish Finder?
If your main goal is catching more fish, a fish finder is the best tool for the job. It’s ideal for:
✔️ Recreational anglers who fish in lakes, rivers, or coastal waters.
✔️ Tournament fishermen who need precision in locating schools of fish.
✔️ Casual boaters looking for an affordable way to improve their fishing trips.
Chartplotter vs Fish Finder: Key Differences
| Feature | Chartplotter | Fish Finder |
|---|---|---|
| Primary Purpose | Navigation & route planning | Finding fish & underwater structures |
| Technology | GPS & digital mapping | Sonar (CHIRP, DownScan, SideScan) |
| Mapping Capabilities | Built-in nautical charts | Basic or no mapping, some models have GPS |
| Expandable Features | Radar, autopilot, AIS, VHF radio | Sonar enhancements only |
| Screen Size | Larger screens (up to 27”) | Smaller screens (typically up to 9”) |
| Best For | Boaters, navigators, offshore anglers | Fishermen looking for sonar technology |
The Biggest Difference? Mapping vs Sonar
A chartplotter is all about maps, while a fish finder is all about sonar. If you need detailed navigation, go with a chartplotter. If you’re focused on fishing, a fish finder is the way to go.
Chartplotter vs Fish Finder: Which One Do You Need?
Now that you know the differences, let’s figure out which one suits your needs.
If You’re a Boater or Navigator → Get a Chartplotter
A chartplotter is essential if you navigate offshore, explore new waters, or need detailed maps. It improves safety, helping you avoid hazards, track your route, and integrate with marine tech like radar and autopilot.
If You’re an Angler → Get a Fish Finder (Like CanFish!)
A fish finder helps you pinpoint fish locations, detect underwater structures, and improve your catch rate.
If you’re looking for a high-performance fish finder, check out CanFish – designed for serious anglers who want cutting-edge sonar technology and an easy-to-use interface. CanFish fish finders are perfect for both freshwater and saltwater fishing, offering clear sonar imaging and advanced depth detection.
If You’re an Offshore Fisherman or Tournament Angler → Prioritize a Fish Finder with GPS
While some offshore anglers use chartplotter-fishfinder combos, a dedicated fish finder like CanFish F1 Pro Fish Finder Drone gives you high-resolution sonar clarity for serious fishing expeditions. With real-time imaging, and waypoint marking, CanFish fish finders help you find and catch more fish with precision.
Final Thoughts: Choosing the Right Marine Electronics
When deciding between a chartplotter vs fish finder, it all comes down to your needs:
Need navigation and mapping? → Get a chartplotter.
Want to find more fish? → Get a fish finder like CanFish.
Investing in the right marine electronics can enhance your experience on the water, whether you’re navigating new routes or reeling in your next big catch.
Ready to upgrade your fishing gear? Check out CanFish fish finders today!
