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Fish Finders & GPS Fish Finders for Boats

Find the perfect fish finder or GPS fish finder for your boat with expert support from ActiveGPS. Whether you’re fishing offshore, inshore, or inland, a high-quality fish finder helps you locate fish, read the seabed, and navigate with confidence.

We stock a wide range of Garmin fish finders, from simple depth sounders to advanced sonar systems featuring ClearVü, SideVü, and GPS chartplotting.

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Deliveries

We offer UK, Europe and Worldwide deliveries. We despatch orders at 4:30pm on Monday, Tuesday, Wednesday, Thursday and Friday. We need to receive your order on those days by 3:00pm. When possible we may despatch orders received after that time. No orders are despatched on Saturday, Sunday or Bank Holidays in England and Wales.

We offer FREE UK delivery on all orders of £50.00 or more, plus next working day and guaranteed Saturday delivery options. Click here for further info. All options also appear at the basket pages.

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Choosing the Right Fish Finder

Choosing the right fish finder depends on how and where you fish, as well as the type of boat you own. Modern fish finders do much more than just show depth - they provide real-time underwater views, fish targets, bottom structure, and water temperature.

Key things to consider when buying a fish finder include:

• Screen size and resolution

• Built-in GPS and chartplotting

• Sonar type (traditional, DownVü, SideVü)

• Boat type and installation options

If you’re unsure which model is right for you, our team is happy to help you choose the best fish finder for your needs.

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Choosing the Right Fish Finder

A GPS fish finder combines sonar with GPS navigation, allowing you to mark fishing spots, save waypoints, and return to productive areas with ease. This is ideal for anglers who want to track locations, follow contours, or navigate unfamiliar waters safely.

Many Garmin GPS fish finders also support marine charts, giving you a single display for both navigation and fishing.

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Garmin Fish Finders and Sonar Technology

Garmin fish finders are known for their reliability, clarity, and advanced sonar technology. Depending on the model, Garmin fish finders can include:

• Traditional CHIRP sonar for accurate depth and fish separation

• ClearVü sonar for near-photographic images below the boat

• SideVü sonar for scanning large areas to the left and right

• Built-in GPS for waypoint marking and navigation

Models ending in “s” include a built-in sounder, while XSV models support advanced sonar features when paired with a compatible transducer.

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Fish Finder Transducers – What You Need to Know

A transducer is essential for your fish finder to operate correctly. It sends and receives sonar signals, allowing your fish finder to display underwater information.

There are three main types of fish finder transducers:

• Transom-mount transducers – best for outboard-powered boats

• In-hull transducers – suitable for single-skin fibreglass hulls

• Through-hull transducers – ideal for steel or wooden boats

Not sure which transducer you need? Use our online transducer selection form , and we’ll recommend the correct transducer for your boat and fish finder.

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Fishfinder Buying Guide

To find the perfect transducer to partner your Garmin STRIKER fishfinder and your boat, yacht or fishing boat please complete our online transducer form. Alternatively, if you know which transducer your require you can view the comprehensive range of transducers available buy from ActiveGPS. (we do however recommend that you complete our online form to find the perfect transducer). Pictured below, transom mounted transducer, thru-hull transducer and in-hull transducer.

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Why Buy Your Fish Finder from ActiveGPS?

When you buy your fish finder from ActiveGPS, you benefit from:

• Expert advice from marine electronics specialists

• A wide range of genuine Garmin fish finders

• Help choosing the correct transducer

• Fast UK delivery and trusted after-sales support

Whether you’re upgrading your existing system or buying your first fish finder, we’re here to help you get the best setup for your boat.

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This page was last reviewed on: 19th January 2026