Boat navigation accessories aren't just nice to have; they're essential for a safe, enjoyable day on the water. Whether you're new to boating or a seasoned captain, the right tools can help you plan routes, avoid hazards, and reach your destination with confidence.
If you're ready to upgrade your navigation setup, here are five types of marine navigation accessories—plus some trusted product options—to consider. In this post, we'll review five types of navigation accessories, as well as several actual products you might want to buy.
What are the Top Boat Navigation Accessories?
1. GPS Chartplotters
In the past, paper charts were used to help boaters get around. Well, thankfully, technology has evolved, and GPS chartplotters are the new norm.
Many GPS chartplotters now integrate with radar, sonar, and autopilot systems for seamless route management. These navigation instruments automatically track your route, calculating distances and helping you avoid obstacles. While they're essential for all types of trips, you'll find that they alleviate stress on long-distance trips and when you're navigating in unfamiliar areas.
Our Top Pick: If you're looking for all the bells and whistles, the Garmin GPSMAP® 9000 series won't disappoint. These GPS chartplotters have just about every feature you can think of and ensure 4K resolution at sizes in the 19 to 27-inch range. They'll provide you with all the necessary information for a safe and efficient journey in record time.
2. Marine Compass
Even with advanced electronics, a marine compass is an essential backup when visibility drops or systems fail. A reliable compass ensures you can navigate safely in fog, storms, or low light.
Our Top Pick: The Ritchie Explorer Bulkhead Compass is not only easy to install but also includes built-in compensators that can be adjusted for deviation. Plus, it offers night illumination and comes with a 5-year warranty for peace of mind. 12-volt lighting is standard, but you can upgrade to 24-volt lighting if you prefer.
3. Depth Sounders and Fishfinders
The primary purpose of depth sounders is to measure the depth of water underneath your boat so you can avoid groundings. Some sounders also function as fishfinders, clearly displaying fish and other underwater features. If you frequently go fishing, these are must-have boat navigation tools.
Our Top Pick: For a budget-friendly yet quality depth fishfinder, the Lowrance Hook Reveal has you covered. The C-MAP Contour charts provide the high-resolution detail you need to take your fishing to the next level. The fishfinder also lets you generate custom ½-foot contour maps of local lakes or uncharted waters in real time.
Read Next: The Top Fishfinders
4. VHF Marine Radio
A VHF marine radio isn't just for emergencies—it's also vital for navigation updates and coordination with other vessels, marinas, and the Coast Guard. Higher-end radios are equipped with advanced features such as GPS and safety alerts.
Our Top Pick: You can't go wrong with the Raymarine Ray53 —a compact VHF radio with built-in GPS and automatic emergency signaling. If you'd like, you can add an optional antenna and passive remote speaker. The radio comes with mount kits, so you should have no issues integrating it with your boat.
Read Next: VHF Marine Radio Mistakes to Avoid
5. Radar and AIS Systems
Radar and Automatic Identification Systems (AIS) are indispensable in low visibility or busy waterways. They help you detect nearby vessels, track their movement, and broadcast your own position to prevent collisions.
Our Top Pick: Available in a variety of sizes ranging from 18 inches to 6 feet in white or black, Garmin Fantom dome radars offer 50 watts of output power, power save mode, and MotionScope technology so you can see various targets in color as they come towards or away from you.
Set Yourself Up for Smoother Journeys on the Water
Boating is exhilarating, but conditions can change fast. Outfitting your vessel with reliable navigation equipment enhances your safety, builds confidence, and ensures smoother journeys. Before purchasing, check reviews and ask other boaters for recommendations to make sure your investment lasts
Originally published March 2010. Updated October 2025.
