Between £500 and £1,000 is where marine GPS units start to feel genuinely capable — larger screens, proper imaging sonar and, on some models, GPS charts built specifically for local waters. Here’s our pick of the best mid-range options.
| Unit | Screen | Price |
|---|---|---|
| Garmin GPSMAP 86sc Handheld Marine GPS with BlueChart g3 Charts | Handheld | £574.99 |
| Lowrance HOOK Reveal 7 TripleShot with SideScan | 7-inch | £574.99 |
| Humminbird HELIX 7 CHIRP MEGA DI GPS G4N Fish Finder | 7-inch | £632.99 |
| Lowrance Eagle 9 with C-MAP European Waterways and TripleShot Transducer | 9-inch | £804.99 |
| Humminbird HELIX 9 MEGA SI+ G4N with AutoChart Live | 9-inch | £977.99 |
The Lowrance HOOK Reveal 7 TripleShot with SideScan and Humminbird HELIX 7 CHIRP MEGA DI GPS G4N Fish Finder both bring 7-inch screens with proper imaging sonar (TripleShot and MEGA Down Imaging respectively) into this bracket — noticeably sharper structure detail than entry-level 4-5 inch units.
For UK boaters specifically, the Lowrance Eagle 9 with C-MAP European Waterways and TripleShot Transducer is worth a close look — it ships with C-MAP European Waterways charts included, useful if you’re cruising canals, rivers or coastal Europe rather than just open sea.
The Humminbird HELIX 9 MEGA SI+ G4N with AutoChart Live tops this bracket with AutoChart Live, building your own depth maps as you go — genuinely useful on waters that aren’t well charted commercially.
What You Get at This Price Point
- Larger 7-9 inch screens that are easier to read from a distance at the helm.
- Proper imaging sonar (Side/Down Imaging or MEGA Imaging) for reading structure, not just fish arches.
- Better chart options, including region-specific packages like European Waterways coverage.
- More capable networking for adding a second display or basic radar later.
Frequently Asked Questions
Is a 7-inch or 9-inch screen better?
7-inch suits smaller helms and kayaks; 9-inch is easier to read at a glance from further away and gives more usable space for split-screen views.
What’s AutoChart Live?
A Humminbird feature that records depth data as you drive and builds it into your own chart layer — useful on smaller lakes and rivers that lack detailed commercial charts.
Should I spend more for European Waterways charts?
If you cruise rivers, canals or coastal Europe regularly, having dedicated charts included can be worth more than the price difference in convenience alone.
Want help picking the right mid-range unit for your boat? Our team can talk through screen size, charts and sonar — browse the full range in our online shop.