Marine Depth Finders & Components

Depth Finders

Featured Brands

  • Lowrance® - Device Specific Fish Finder/Chartplotter Bail Mount with Knobs
    Lowrance®Device Specific Fish Finder/Chartplotter Bail Mount with Knobs
    1
    # 4333828835
    Device Specific Fish Finder/Chartplotter Bail Mount with Knobs 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $27.99 - $55.99
  • Lowrance® - Device Specific Fish Finder/Chartplotter Flush Mount Kit
    Lowrance®Device Specific Fish Finder/Chartplotter Flush Mount Kit
    0
    # 4333838839
    Device Specific Fish Finder/Chartplotter Flush Mount Kit 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $14.95 - $15.95
  • Furuno® - Device Specific Fish Finder/Chartplotter/Monitor Bail Mount with Knobs
    Furuno®Device Specific Fish Finder/Chartplotter/Monitor Bail Mount with Knobs
    0
    # 4333839848
    Device Specific Fish Finder/Chartplotter/Monitor Bail Mount with Knobs 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $305.75 - $408.94
  • Furuno® - Device Specific Monitor Mounting Adapter Plate
    Furuno®Device Specific Monitor Mounting Adapter Plate
    0
    # 4333837838
    Device Specific Monitor Mounting Adapter Plate 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $230.16 - $265.76
  • Furuno® - Transducer Adapter Cable
    Furuno®Transducer Adapter Cable
    0
    # 4505323411
    Transducer Adapter Cable 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
    $59.80 - $180.46
  • Furuno® - Transducer Extension Cable
    Furuno®Transducer Extension Cable
    0
    # 5459876284
    Transducer Extension Cable 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $100.33 - $558.10
  • Raymarine® - 10-Pin Transducer Extension Cable
    Raymarine®10-Pin Transducer Extension Cable
    0
    # 4573306509
    10-Pin Transducer Extension Cable by Raymarine®. Connection Type: 10-Pin. 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $31.55 - $134.03
  • Raymarine® - 11-Pin Transducer Extension Cable for CP450C Sonars
    Raymarine®11-Pin Transducer Extension Cable for CP450C Sonars
    0
    # 4699256192
    11-Pin Transducer Extension Cable for CP450C Sonars 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $57.63 - $77.25
  • Raymarine® - 25-Pin Transducer Extension Cable
    Raymarine®25-Pin Transducer Extension Cable
    0
    # 4573298427
    25-Pin Transducer Extension Cable by Raymarine®. Connection Type: 25-Pin. 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
    $105.27 - $201.63
  • Raymarine® - Transducer Adapter Cable
    Raymarine®Transducer Adapter Cable
    0
    # 4573302530
    Transducer Adapter Cable 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, this product by Raymarine® will last a...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $33.80 - $102.83
  • Raymarine® - Transducer Y-Cable
    Raymarine®Transducer Y-Cable
    0
    # 4573298487
    Transducer Y-Cable 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 and deliver great quality at...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $60.70 - $121.41
  • Simrad® - Transducer Adapter Cable
    Simrad®Transducer Adapter Cable
    0
    # 4573299457
    Transducer Adapter Cable 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 needs and deliver great quality...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $24.85 - $49.71
  • B&G® - WS310 Wired Wind Transducer Kit
    B&G®WS310 Wired Wind Transducer Kit
    0
    # 4068953880
    WS310 Wired Wind Transducer Kit by B&G®. A high precision wired wind sensor, designed for cruising and club racing sailors. The B&G WS310 wind sensor offers high performance data accuracy, with improved aerodynamics suitable for all...
    Superior data accuracy and aerodynamicsSensor quality
    $549.00 - $699.00
  • Faria Beede Instruments® - Plastic Flush Thru-hull Mount Transducer
    Faria Beede Instruments®Plastic Flush Thru-hull Mount Transducer
    0
    # 4068953925
    Plastic Flush Thru-hull Mount Transducer by Faria Beede Instruments®. 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
    $144.79 - $172.27
  • Furuno® - Airmar Bronze External Thru-hull Mount Transducer
    Furuno®Airmar Bronze External Thru-hull Mount Transducer
    0
    # 4068955987
    Airmar Bronze External Thru-hull Mount Transducer 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, this product by Furuno®...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $268.61 - $1,874.02
  • Furuno® - Airmar Plastic Transom Mount Transducer
    Furuno®Airmar Plastic Transom Mount Transducer
    0
    # 4068947331
    Airmar Plastic Transom Mount Transducer 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, this product by Furuno® will last...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $61.51 - $953.34
  • Furuno® - Airmar Tilted Element™ Stainless Steel Flush Thru-hull Mount Transducer with 30' Cable
    Furuno®Airmar Tilted Element™ Stainless Steel Flush Thru-hull Mount Transducer with 30' Cable
    0
    # 4068948264
    Airmar Tilted Element™ Stainless Steel Flush Thru-hull Mount Transducer with 30' Cable 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...
    The transducer’s ceramic elements are permanently tilted inside the housing to compensate for the hull deadrise. This ensures the beam is aimed straight down, resulting in maximum echo returns and eliminating the need for a fairingLow profile design extends only 6mm below the hull
    $425.23 - $1,175.94
  • Furuno® - Bronze External Thru-hull Mount Transducer
    Furuno®Bronze External Thru-hull Mount Transducer
    0
    # 4068951886
    Bronze External Thru-hull Mount Transducer 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, this product by Furuno® will...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $389.52 - $2,519.89
  • Furuno® - Bronze Flush Thru-hull Mount Transducer
    Furuno®Bronze Flush Thru-hull Mount Transducer
    0
    # 4068954877
    Bronze Flush Thru-hull Mount Transducer 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, this product by Furuno® will last...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $338.28 - $1,362.30
  • Furuno® - Bronze Flush Thru-hull Mount Transducer
    Furuno®Bronze Flush Thru-hull Mount Transducer
    0
    # 4068947409
    Bronze Flush Thru-hull Mount Transducer 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $276.78 - $1,626.62
  • Furuno® - Bronze Flush Thru-hull Mount Transducer
    Furuno®Bronze Flush Thru-hull Mount Transducer
    0
    # 4068947217
    Bronze Flush Thru-hull Mount Transducer 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, this product by Furuno® will last...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $258.33 - $820.45
  • Furuno® - Plastic External Mount Transducer
    Furuno®Plastic External Mount Transducer
    0
    # 4068955897
    Plastic External Mount Transducer 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...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $485.90 - $4,369.38
  • Furuno® - Plastic Transom Mount Transducer
    Furuno®Plastic Transom Mount Transducer
    0
    # 4068955890
    Plastic Transom Mount Transducer 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, this product by Furuno® will last a...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $124.79 - $2,716.11
  • Furuno® - Stainless Steel External Thru-hull Mount Transducer
    Furuno®Stainless Steel External Thru-hull Mount Transducer
    0
    # 4068947412
    Stainless Steel External Thru-hull Mount Transducer 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, this product by...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $1,537.65 - $3,542.75
  • Humminbird® - MEGA 360 Imaging Plastic Trolling Motor Mount Transducer
    Humminbird®MEGA 360 Imaging Plastic Trolling Motor Mount Transducer
    0
    # 4068951302
    MEGA 360 Imaging Plastic Trolling Motor Mount Transducer by Humminbird®. Measures: Depth/Temperature. Frequency: 351-650kHz. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $1,290.13 - $1,799.99
  • Humminbird® - MEGA Down Imaging+ Plastic Transom Mount Transducer
    Humminbird®MEGA Down Imaging+ Plastic Transom Mount Transducer
    0
    # 4068948324
    MEGA Down Imaging+ Plastic Transom Mount Transducer 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
    $240.11 - $300.11
  • Humminbird® - MEGA Down Imaging+ Plastic Trolling Motor Mount Transducer
    Humminbird®MEGA Down Imaging+ Plastic Trolling Motor Mount Transducer
    0
    # 4068947377
    MEGA Down Imaging+ Plastic Trolling Motor Mount Transducer 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
    $240.11 - $300.11
  • Humminbird® - MEGA Side/Down Imaging Plastic External Thru-hull Mount Transducer
    Humminbird®MEGA Side/Down Imaging Plastic External Thru-hull Mount Transducer
    0
    # 4068948329
    MEGA Side/Down Imaging Plastic External Thru-hull Mount Transducer by Humminbird®. Measures: Depth/Temperature. Frequency: 83/200/455/800kHz and 1.2 MHz. This product is made of high-quality materials to serve you for years to come....
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $389.06 - $539.39
  • Humminbird® - MEGA Side/Down Imaging Plastic Transom Mount Transducer
    Humminbird®MEGA Side/Down Imaging Plastic Transom Mount Transducer
    0
    # 4068947345
    MEGA Side/Down Imaging Plastic Transom Mount Transducer by Humminbird®. Measures: Depth/Temperature. Frequency: 83/200/455/800kHz and 1.2 MHz. This product is made of high-quality materials to serve you for years to come. Designed using...
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $240.11 - $433.55
  • Humminbird® - MEGA Side/Down Imaging Plastic Trolling Motor Mount Transducer
    Humminbird®MEGA Side/Down Imaging Plastic Trolling Motor Mount Transducer
    0
    # 4068955018
    MEGA Side/Down Imaging Plastic Trolling Motor Mount Transducer by Humminbird®. Measures: Depth/Temperature. Frequency: 83/200/455/800kHz and 1.2 MHz. This product is made of high-quality materials to serve you for years to come....
    Engineered to high standardsHigh-grade design delivers extended lifespan
    $240.11 - $422.63




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.

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