Marine Depth Finders & Components
Featured Brands
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Lowrance®Fish Finder/Chartplotter Bezel/Card DoorFish Finder/Chartplotter Bezel/Card Door by Lowrance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Engineered to high standardsHigh-grade design delivers extended lifespan$36.99 - Humminbird®Unit CoverUnit Cover by Humminbird®. Ready for your next trophy catch with the latest fishing gear? Complete your arsenal with quality and dependable fishing gear that will work best for your next fishing trip. Gear up with us for the fishing...Engineered to high standardsHigh-grade design delivers extended lifespan$21.23 - $50.27
- Standard Horizon®Radio Unit CoverRadio Unit Cover by Standard Horizon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...Engineered to high standardsHigh-grade design delivers extended lifespan$9.57 - $10.18
- Raymarine®Device Specific Fish Finder/Chartplotter Flat Mount KitDevice Specific Fish Finder/Chartplotter Flat Mount Kit by Raymarine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Engineered to high standardsHigh-grade design delivers extended lifespan$40.04 - $108.29
- Raymarine®Device Specific Monitor Mounting Adapter PlateDevice Specific Monitor Mounting Adapter Plate by Raymarine®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...Upgrading is simple - using optional easy-fit bezelsSuperbly durable materials for utmost strength$59.93 - $106.60
- Scanstrut®Un-cut Arm Mount PodUn-cut Arm Mount Pod by Scanstrut®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality...Extend the Rail Pod away from narrow or crowded rails for better viewingDesigned to ensure the Pod is always positioned for best viewing, whatever the angle of the rail$217.72 - $418.62
- Scanstrut®Un-cut Helm PodUn-cut Helm Pod by Scanstrut®. With great new design features, the Scanstrut Helm Pod is a perfect choice for all cockpit configurations. With options to fit radar displays, chartplotters and standard navigation instruments, the choice...Universal Helm Fixing: Fits pedestal rails from 25mm to 33.7mm (0.98" - 1.33") diameter. Using a unique clamping system, the Deep Pod's can fit rail widths from 178mm (7") upwardsSecure & Watertight Install: Saddle system supports the stainless tubing enabling a secure and rigid fit onto any pedestal and also ensures a watertight seal at cable entry$312.12 - $588.91
- Scanstrut®Un-cut Rail PodUn-cut Rail Pod by Scanstrut®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Current sailboat designs often have very open cockpits with few options for installing retro-fit instrumentsThe Rail Pod gives you an option for fitting smaller displays and instruments directly onto a rail, in a position which suits you$151.37 - $398.06
- Simrad®Device Specific Fish Finder/Chartplotter Bail Mount with KnobsDevice Specific Fish Finder/Chartplotter Bail Mount with Knobs by Simrad®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Engineered to high standardsHigh-grade design delivers extended lifespan$37.28 - $79.09
- Simrad®Device Specific Fish Finder/Chartplotter Flat Mount KitDevice Specific Fish Finder/Chartplotter Flat Mount Kit by Simrad®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Engineered to high standardsHigh-grade design delivers extended lifespan$22.67 - $41.80
- Furuno®Device Specific Receiver/Transceiver Flush Mount KitDevice Specific Receiver/Transceiver Flush Mount Kit by Furuno®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Engineered to high standardsHigh-grade design delivers extended lifespan$42.69 - $173.95
- Humminbird®Device Specific Fish Finder In-Dash Mount KitDevice Specific Fish Finder In-Dash Mount Kit by Humminbird®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by...Engineered to high standardsHigh-grade design delivers extended lifespan$75.20 - $83.85
- Humminbird®Device Specific Fish Finder/Chartplotter Bail Mount with KnobsDevice Specific Fish Finder/Chartplotter Bail Mount with Knobs by Humminbird®. Ready for your next trophy catch with the latest fishing gear? Complete your arsenal with quality and dependable fishing gear that will work best for your...Engineered to high standardsHigh-grade design delivers extended lifespan$31.91 - $80.36
- Humminbird®Device Specific Fish Finder/Chartplotter In-Dash Mount KitDevice Specific Fish Finder/Chartplotter In-Dash Mount Kit by Humminbird®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this...Engineered to high standardsHigh-grade design delivers extended lifespan$42.47 - $93.95
- T-H Marine®Universal Fish Finder/Chartplotter Kong™ Wave Tamer Surface Mount BracketUniversal Fish Finder/Chartplotter Kong™ Wave Tamer Surface Mount Bracket by T-H Marine®. Built to withstand the roughest conditions, the T-H Marine Kong Wave Tamer provides a stable, elevated platform for your on-board electronics....Engineered to high standardsHigh-grade design delivers extended lifespan$73.00 - $82.43
- Lowrance®ActiveTarget™ Sonar ModuleActiveTarget™ Sonar Module by Lowrance®. See high-resolution images of fish swimming around structure and responding to your lure – as it happens – with new ActiveTarget™ Live Sonar. Featuring Forward, Down or Scouting views,...Get three views from one transducer: Forward view ahead of your boat, Down view below your boat or Scout view – an ultra-wide, overhead view in front of your boatSee how fish are positioned in and around structure and watch them respond to your lure as it happens$549.00 - $1,249.00
- Lowrance®StructureScan™ 3D Sonar ModuleStructureScan™ 3D Sonar Module by Lowrance®. StructureScan 3D gives freshwater and saltwater anglers a unique, three-dimensional view of fish, structure and bottom contours - making it easier to understand where fish and structure are...Engineered to high standardsHigh-grade design delivers extended lifespan$659.00 - $1,109.00
- T-H Marine®HydroWave H2 Fish AttractorHydroWave H2 Fish Attractor by T-H Marine®. The HydroWave Bass H2 is a Marine Audio Device based on the reactive senses of a Bass and other predatory fish. It delivers the latest in patented, sound emitting technology, effectively...Multiple Sound PatternsWaterproof Speaker$408.34 - $576.24
- Humminbird®MEGA Live TargetLock™ Transducer Adapter KitMEGA Live TargetLock™ Transducer Adapter Kit by Humminbird®. This adapter kit is for users who have a MEGA Live Imaging Transducer and Minn Kota® Ultrex™ trolling motor and are looking to add the advantages of MEGA Live TargetLock....MEGA Live TargetLock is mounted independent of the trolling motor steering, which allows anglers full use of their trolling motor, including Spot-Lock, while having dedicated control of MEGA Live ImagingThe TargetLock feature allows anglers to set a directional lock of the live sonar and it will keep itself oriented, so anglers never lose sight of the structure, even while the boat moves in the water$1,799.99
- Humminbird®MEGA Live TargetLock™ Transducer Adapter Kit with MEGA Imaging TransducerMEGA Live TargetLock™ Transducer Adapter Kit with MEGA Imaging Transducer by Humminbird®. This adapter kit is for users who have a MEGA Live Imaging Transducer and Minn Kota® Ultrex™ trolling motor and are looking to add the...MEGA Live TargetLock is mounted independent of the trolling motor steering, which allows anglers full use of their trolling motor, including Spot-Lock, while having dedicated control of MEGA Live ImagingThe TargetLock feature allows anglers to set a directional lock of the live sonar and it will keep itself oriented, so anglers never lose sight of the structure, even while the boat moves in the water$3,599.99
- Minn Kota®MEGA Live TargetLock™ Transducer Adapter KitMEGA Live TargetLock™ Transducer Adapter Kit by Minn Kota®. This adapter kit is for users who have a MEGA Live Imaging Transducer and Minn Kota® Ultrex™ trolling motor and are looking to add the advantages of MEGA Live TargetLock....MEGA Live TargetLock is mounted independent of the trolling motor steering, which allows anglers full use of their trolling motor, including Spot-Lock, while having dedicated control of MEGA Live ImagingThe TargetLock feature allows anglers to set a directional lock of the live sonar and it will keep itself oriented, so anglers never lose sight of the structure, even while the boat moves in the water$462.55 - $465.61
- Furuno®Fish Finder Unit CoverFish Finder Unit Cover by Furuno®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality...Engineered to high standardsHigh-grade design delivers extended lifespan$50.65 - $1,452.82
- Icom®Radio Unit CoverRadio Unit Cover by Icom®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an...Engineered to high standardsHigh-grade design delivers extended lifespan$14.07 - $25.19
- Simrad®Device Specific Fish Finder/Chartplotter In-Dash Mount KitDevice Specific Fish Finder/Chartplotter In-Dash Mount Kit by Simrad®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Engineered to high standardsHigh-grade design delivers extended lifespan$31.63 - $41.65
- Panther®Universal Fish Finder/Chartplotter Angler's Pal Ball MountUniversal Fish Finder/Chartplotter Angler's Pal Ball Mount by Panther®. With Angler’s Pal Multi-Mounts, your fish finder/depth sounder can be mounted anywhere in the boat and quickly positioned for easy reading. They give you a full...Engineered to high standardsHigh-grade design delivers extended lifespan$112.47 - $122.91
- Faria Beede Instruments®Euro Series 2.06" Black Dial/Black Aluminum Bezel In-Dash Mount Depth Gauge with In-Hull Transducer (12851)Euro Series 2.06" Black Dial/Black Aluminum Bezel In-Dash Mount Depth Gauge with In-Hull Transducer (12851) by Faria Beede Instruments®. Perimeter-lighted black dial with bold white graphics, black aluminum bezel, contoured white...Deep and Shallow water alarmsProgrammable Keel off-set$286.65
- Faria Beede Instruments®Euro Series 2.06" Black Dial/Black Aluminum Bezel In-Dash Mount Depth Gauge with Transom Mount Transducer (12850)Euro Series 2.06" Black Dial/Black Aluminum Bezel In-Dash Mount Depth Gauge with Transom Mount Transducer (12850) by Faria Beede Instruments®. Perimeter-lighted black dial with bold white graphics, black aluminum bezel, contoured white...Deep and Shallow water alarmsProgrammable Keel off-set$246.37
- Faria Beede Instruments®Chesapeake Series 2.06" Black Dial/Polished Stainless Steel Bezel In-Dash Mount Depth Gauge with In-Hull Transducer (13751)Chesapeake Series 2.06" Black Dial/Polished Stainless Steel Bezel In-Dash Mount Depth Gauge with In-Hull Transducer (13751) by Faria Beede Instruments®. Perimeter-lighted black dial with stylish blue and white graphics, polished...Deep and Shallow water alarmsProgrammable Keel off-set$261.34
- Faria Beede Instruments®Chesapeake Series 2.06" Black Dial/Polished Stainless Steel Bezel In-Dash Mount Depth Gauge with Thru-Hull Transducer (13795)Chesapeake Series 2.06" Black Dial/Polished Stainless Steel Bezel In-Dash Mount Depth Gauge with Thru-Hull Transducer (13795) by Faria Beede Instruments®. Perimeter-lighted black dial with stylish blue and white graphics, polished...Deep and Shallow water alarmsProgrammable Keel off-set$232.43
- Faria Beede Instruments®Chesapeake Series 2.06" Black Dial/Polished Stainless Steel Bezel In-Dash Mount Depth Gauge with Transom Mount Transducer (13750)Chesapeake Series 2.06" Black Dial/Polished Stainless Steel Bezel In-Dash Mount Depth Gauge with Transom Mount Transducer (13750) by Faria Beede Instruments®. Perimeter-lighted black dial with stylish blue and white graphics, polished...Deep and Shallow water alarmsProgrammable Keel off-set$228.29
A depth finder is a navigation device that can greatly increase your safety offshore and significantly improve the comfort of boating. Also known as a depth sounder or echo sounder, the device typically makes use of sonar technology to determine the precise depth of water as well as pinpoint the objects underwater near your boat. The device makes it possible to determine shallow places dangerous for navigation and find out the depth and location of fish.
Sonar is a method that uses sound navigation technology and ranging. When the sound waves sent by the depth finder penetrate the water, they are reflected by the objects the waves encounter and are then sent back to the sonar. Based on the time it takes for the sound waves to be reflected from the objects underwater and the size of the wave, the depth finder generates a digital image of the identified objects. Basic depth sounders are designed to simply determine the depth, while some more sophisticated units will create detailed 3 dimensional diagrams that specify an entire range of underwater features.
A depth finder usually consists of two parts: a screen that serves for inputting and outputting the data and a sonar device that emits the sound waves. The first is placed on board, while the latter is positioned underneath the boat. High-tech depth sounder LCD displays can generate monochrome or multicolor 3D maps with a variety of sonar data. The average depth range of personal boat depth finders is between 2.5’ and 200’. Commercial depth sounders are usually more advanced and expensive, being capable of working at greater depths with additional precision. Accurate sonar readings can be made at speeds not higher than 63 mph.
Most modern depth finders have auto-sensitivity and auto-ranging features. Swiftly reacting to the detected changes in depth, the depth sounder has a three-stage warning system. Giving audible and visual upper and lower depth alarm signals, the device allows you to quickly react to any potential hazards. Including GPS and pre-loaded cartography, depth finders are capable of providing you with almost picture-like image of the water underneath your boat. Coupled with a proper shoot-through, through-hull or transom mount transducer, your depth finder will always deliver its top performance.