Best Marine GPS And Depth Finder · Review 2024

Marine GPS Depth Finder
4.8/5 - (22 votes)

Using a marine GPS and depth finder is a great way to navigate your boat. They connect to satellites and display the boat’s location on a map, as well as other important details such as water depth, water temperature, latitude, and longitude.

This article will review the six best marine GPS and depth finders available on the market. Depth finders are devices used for water navigation, and they have been made to be as accurate as possible so that any diver can rely on them to take readings from underwater.

This review is based on those features, so let’s take a look at what makes these six the best among all the other choices. 

Every fisherman knows the importance of having a depth finder in their boat because it helps them locate fish and their natural habitat.

However, with so many GPS depth finders to choose from, it can be difficult to find the best one that is the right fit for your needs.

To help complicate matters further, there are different types of depth finders, some only display the depth but others may also measure water temperature, and water salinity, or even give you your distance from shore.

Top Rated 6 Best Marine GPS And Depth Finder

1Simrad Cruise 9 GPS Chartplotter – Depth Finder 90/100Check Price
2Garmin GPSMAP 79sc Waterproof – Marine GPS 93/100Check Price
Humminbird HELIX 7 CHIRP MSI GPS – Fish Finder95/100Check Price
4Garmin Striker 488/100Check Price
5Garmin ECHOMAP UHD 74Cv – Depth Finder90/100Check Price
6Lowrance HDS-Live 12 – Fish Finder95/100Check Price
Comparative table – Best Marine GPS And Depth Finder

Let’s deep dive into each of the marine GPS:

#1 Simrad Cruise 9 GPS Chartplotter

Simrad Cruise 9

Simrad Cruise 9 GPS Chartplotter

Key Specs:

  • Brand Name: Simrad.
  • Screen Size: 9 Inches.
  • Weight: 5.85 pounds
  • Special Feature: Waterproof
  • Vehicle Service Type: Boat
  • Connectivity: Bluetooth.

Do you want to be able to navigate the waters with ease? And looking for the best GPS fishfinder?

Simrad Cruise is a Chartplotter that makes navigation simple. For people looking for a simple GPS without all the bells and whistles, this is an excellent choice.

The Simrad Cruise 9 is the ideal gadget for every person who wants to spend their day on the water.

It comes complete with all the charts you need and supports enhanced charts from C-MAP and Navionics.

Sensors create bookmarks, which you can access at any time by using easy-to-use menus. Using a rotary dial and keypad to move from one screen to another is simple.

With so much information at your fingertips, you’ll be confident in the safety of your boat and confident in making any necessary repairs.

Get depth readings, position, battery voltage, and other important boat data right on your phone!

The large display makes everything easier for those who have trouble viewing smaller devices because there’s no need to adjust your grip or switch hands anymore.

This device was made specifically for people like us who want an incredible experience from start to finish! So, click here now to purchase a Simrad Cruise 9 GPS depth finder today!

#2 Garmin GPSMAP 79sc Waterproof Marine GPS

Garmin GPSMAP 79sc

Garmin GPSMAP 79sc

Key Specs:

  • Brand Name: Garmin.
  • Screen Size: 3 Inches.
  • Weight: 15.4 ounces
  • Connectivity: USB.
  • Battery Life: 20h.
  • Special Feature: Designed To Float; Accurate Tracking; Increased Memory; Built-in Compass.

The Garmin GPSMAP 79sc is the perfect marine GPS and depth finder for fishing, boating & kayaking, and other marine activities.

This handheld marine GPS Chartplotter is perfect for boating and fishing. The high-sensitivity GPS receiver and 2.6-inch color TFT display make it easy to navigate.

The Garmin GPSMAP 79sc also includes a built-in depth finder with a range of up to 50 feet, so you can avoid obstacles before you hit them.

This device is waterproof and perfect for use on boats. Its GPS has a built-in BlueChart g2 U.S.

However, this waterproof Marine GPS is a powerful navigational tool for marine environments.

The GPSMAP 79sc is a fully-featured and functional GPS device with a built-in 3-axis tilt-compensated electronic compass and barometric altimeter for direction, altitude, and weather.

You can connect your GPS to the internet and share your position, waypoints, routes, and tracks with others wirelessly.

#3 Humminbird HELIX 7 GPS Fish Finder

Humminbi7d Helix 7

Humminbird Helix 7

Key Specs:

  • Brand Name: Humminbird.
  • Transducer: Not Included.
  • Screen Size: 7 Inches.
  • Weight: 4.7 Pounds.
  • Material: Blend
  • Battery Included: No.

Humminbird HELIX 7 CHIRP MEGA SI GPS is the ultimate easy-to-use fish finder, providing you with the most advanced features in one easy-to-use package.

Side Imaging, Down Imaging, and Dual Spectrum CHIRP Sonar combine to give you a complete picture of what is happening below your boat.

The MEGA Side Imaging and MEGA Down Imaging sonar provide you with a clear picture of what is below your boat.

The HELIX 7 gives you advanced navigation features like AutoChart Live, which automatically creates a customizable chart of your boat’s location, and GPS/GLONASS Receiver for superior reception even in deep canyons or under heavy tree cover.

The Navionics card includes more than 10,000 lakes and rivers, with free updates for the life of the product

Overall, The Helix 7 GPS is the top-of-the-line fish finder from Humminbird, delivering the most advanced features to help you catch more fish. ⭐⭐⭐⭐⭐

#4 Garmin Striker 4

Garmin Striker 4

Garmin Striker 4

Key Specs:

  • Brand Name: Garmin.
  • Color: Black
  • Display Type: LCD
  • Dimensions: 3.6″L x 1.6″W x 5.9″H
  • Weight: 8 Ounces `

Are you looking for the best budget and cheap fish finder?

The Garmin Striker 4 is a 3.5-inch color fishfinder with built-in high-sensitivity GPS that makes locating fish, identifying them, and returning to hot spots, docks, and ramps easier than ever before.

The versatile keypad operation of this device allows you to quickly change between CHIRP (77/200 kHz) sonar transducers or upgrade your high-performance boat with the GT8 and 15 separately.

It’s everything you need for fishing success!

You won’t have any trouble finding your way back home when you use the Striker 4 because it has built-in GPS capabilities.

As a result, you’ll be able to tell exactly where you are on the lake at all times.

And if that wasn’t enough, this device also includes a wireless remote control so that you can change settings without having to get out of your boat!

The best part of this device is that even though it’s cheap, affordable, and best for the budget, it still manages to include all of the features that you need.

So, without thinking you can buy the Garmin Striker 4 for your next fishing trip.

#5 Garmin ECHOMAP UHD 74Cv

Garmin ECHOMAP UHD 74cv

Garmin Echomap 74cv

Key Specs:

  • Brand Name: Garmin.
  • Color: Black
  • Screen Size: 7 inches.
  • Connectivity Tech: Wi-Fi
  • Weight: 4.33 pounds

Are you looking for a new depth finder GPS for marine boats? The Garmin ECHOMAP UHD 74cv is the perfect device to help you find more fish.

It has a bright, sunlight-readable 7-inch touchscreen with keyed assist and includes a GT24 transducer which provides an Ultra High Definition scanning sonar that means it can detect bottom objects even in deep water!

The best of Garmin and Navionics data comes preloaded into the Chartplotter.

This combo comes loaded up with BlueChart G3 coastal charts which utilize both Garmin & Navionics information for your scenic needs!

Get real-time networked engine info right off onto your screens via NMEA2000 standards, so there’s no need to look down at terminals all day long during sport fishing expeditions.

With this gadget, you’ll be able to see what’s down there like never before! You won’t have to worry about missing any spots because it has remarkable target separation.

Thanks to high wide CHIRP traditional sonar technology that delivers an amazing view of the structure, cover, and bottom composition that makes every fishing trip more successful than ever before!

And if that wasn’t enough it features a quick-release bail mount making it easy to remove from your boat so you can take it wherever you go!

It’s not simply a fantastic device, but it’s also an extraordinary experience that we know you’ll enjoy every day of your life.

No matter whether you are a beginner or a pro, it is suitable for all types of anglers with all types of skill levels.

💡 Would you like more information about this product? ➡️ Garmin ECHOMAP UHD 74Cv

#6 Lowrance HDS-Live 12

Lowrance HDS-Live

Lowrance HDS-Live

Key Specs:

  • Brand Name: Lowrance.
  • Screen Size: 12 Inches.
  • Weight: 15.7 Pounds.
  • Power Source:12 Volt DC
  • Item Dimensions: 12.6 x 9.06 x 9.84 inches

If you’re like most anglers, you love fishing and want to catch more fish. But when it comes to finding the right equipment for your needs, things can get complicated.

No matter how much time or money you invest in your boat, if you don’t have a good depth finder onboard, then all of that is wasted. 

With the Lowrance HDS-Live 12, you can now see more fish and structures than ever before.

The new HDS-Live 12 is a serious upgrade from previous models as it has dual-core processors that allow for faster redraws.

Users may also use StructureScan 3D or StructureScan HD to get the best possible view of fish and structures, below and to the sides of their boat with this unit.

You will be able to get where you need to go much quicker with this GPS device.

The route plans are automatic and save time because they determine the safest course around bridge piers, rocks, etc., all while avoiding submerged obstacles like they were nothing while fishing!

You will be able to cover more water and mark fish targets more clearly from a network of CHIRP sonar transducers all at an affordable price point.

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What is a GPS and Depth Finder?

GPS devices are global positioning systems, while depth finders calculate underwater depth.

Only a few people are aware of how these systems work. GPS devices come in a variety of sizes and shapes that fit into your hand or attach permanently to vehicles or vessels.

GPS is, more specifically, an Astro-geodetic satellite system that tells you exactly where on the Earth’s surface you are on the planet.

A GPS device typically has three components: The navigational message (ship position), the numerical ephemeris (orbit information), and clock data (time).

The ship’s location relative to satellites in space is calculated by measuring the distance between the satellite and receiver plus its transit time over the satellite.

An underwater depth finder is used to measure the water’s depth when boating or fishing. It is also called a fish finder, sonar, depth meter, fathometer, or depth sounder.

Most depth finders are equipped with a display screen that displays the depth in feet or meters.

Types of Marine Depth Finders

There are three main types of depth finders: the first is a sounder.

A sounder is a device that measures the distance to the ocean floor by sending sound waves, which then bounce back and provide an indication on the display.

The second type is an echo sounder or sonar (which is typically installed on boats).

This device sends out sound pulses that return as electronic echoes and provides acoustic information about the water column, for example, this can be used to identify fish in the boat’s path.

The third type of depth finder called a spotter device uses forward-looking sonar to identify objects when it’s too difficult or dangerous to look over the bow of the boat, like in waters with lots of shallow reefs, rocks, or other obstructions.

Buying Guide: What Should I Look For in a Marine GPS?

When you are out on the open water, it is important to have a reliable GPS to help you navigate. But with so many different marine GPS systems on the market, it can be tough to know which one is right for you.

Here are a few things to look for when shopping for a marine GPS:

Ease of Use:

You don’t want to be fumbling with your GPS when you are trying to navigate. Look for a system with a large, easy-to-read display and simple controls.


Make sure your GPS is accurate enough to get you where you need to go. Look for a system with built-in WAAS/EGNOS/MSAS capability for the highest level of accuracy.


Your GPS will be exposed to the elements, so it needs to be tough enough to withstand the abuse. Look for a waterproof and shockproof system.

Battery Life:

When you are out on the water, you don’t want your GPS to die on you. Look for a system with long battery life.

Depth Range:

A depth finder can measure the depth of water. It is an electronic device that sends out sound waves and then receives them with a sensor.

The data is then converted into depth. A basic depth finder usually has a depth measurement that is accurate to around 200 feet.


Having a waterproof GPS is very useful for navigation.

Not only does it keep your screen dry, but you won’t have any problems with water damage and can use the device all day long in rain or deep-sea conditions without worrying about damaging anything inside!


Some GPS systems come with handy extras like tide and weather data, fish finders, and more. If you are looking for a complete navigation system, look for a GPS that offers these extras.

FAQs: People Also Asked

What is the easiest GPS to use on a boat?

The Garmin Striker 4 is the easiest GPS to use on a boat. It has a clear and user-friendly 3.5-inch color screen with all of the features you need to get where you’re going. Plus, it’s very affordable.

What is the easiest GPS fishfinder to use?

The world’s easiest GPS fishfinder to use is the Lowrance HOOK2 9 TripleShot which features a 9-inch bright and easy-to-see in direct sunlight display with Autotuning Sonar, High CHIRP Down Imaging, and Side Imaging Sonar, and an easy-to-understand menu at an affordable price.

Which is better Simrad or Garmin?

Simrad features LiveSight which is cool because it gives you the ability to see fish as they swim around your boat. But Garmin’s Livescope is better than LiveSight because it gives you a clearer and wider view of what’s going on beneath and around your boat. Also, Garmin is universally accepted as having better GPS/Fishfinder than Simrad.

Is Raymarine better than Garmin?

Raymarine is known for its high-quality and reliable Chartplotters that are designed to withstand harsh marine environments, while Garmin offers a wider range of products at different price points, with a reputation for being innovative and cutting-edge.

Both companies have user-friendly interfaces and offer excellent customer service, but ultimately, the choice between them depends on the individual’s needs and preferences. It’s essential to conduct thorough research, read reviews, and compare features and prices before deciding on a product.

Final Opinion:

Investing in a marine GPS and depth finder is an excellent idea for anyone who spends time on the water.

Whether you are fishing, kayaking, racing, cruising, or just looking to explore, knowing your exact position at all times can be invaluable.

The type of GPS depth finder that will work best for you depends largely on what you’ll use it for most often.

If most of your boating activities are done close to shore (less than 10 miles) then a basic unit with good accuracy should do the trick.

But if you plan to venture out further offshore (over 20 miles), look into more advanced options like global positioning systems (GPS).

Whatever option works best for your needs, we’ve got reviews here so you can read up and compare models and prices before making a purchase.

If you liked this article, leave us your feedback!


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