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Instruments

Depth Instruments Instrument Transducers & Sensors Instrument Display Mounts & Accessories Multifunction Instruments Weather Stations Speed Instruments Wind Instruments

180 Listed

  1. Airmar B17/B617/DT800 Replacement Rubber Washer - 09-452

    $5.89
    1

  2. Airmar P79 Replacement Screw Pack - P79-SCREWPACK

    $6.42

  3. Airmar P79 In-Hull Transducer O-Ring - 09-518-18

    $6.73
    5

  4. Airmar 33-114 Spares Kit O-Ring - 09-145

    $6.84

  5. Airmar 33-108 Spares Kit O-Ring - 09-146

    $7.04
  6. 68% off

    Veratron AquaLink NavControl Display Bezel - A2C3997600001

    $24.70
    $7.83
    0

  7. Airmar 33-113/33-114 Paddle Wheel Kit Replacement Shaft - 01-088-5

    $8.37

  8. Faria Universal Pitot Kit - 91109

    $21.80
    1

  9. Airmar P79 Replacement Mounting Base and Locking Ring - P79-FL

    $25.98
    4

  10. Airmar S300/ST300 Spare Paddlewheel Kit - 33-350-01

    $25.98
    2

  11. Airmar ST-200 Spare Wheel Kit - 33-114

    $27.39

  12. Airmar P65/ST69 Transducer Paddlewheel Kit - 33-398-01

    $28.09

  13. Airmar ST-550/100 Spare Wheel Kit - 33-108

    $29.15

  14. Airmar Replacement Blanking Plug Assembly without Valve - 33-486-01

    $32.32
    1

  15. Airmar P317 Plastic Taper-Flush Housing - 33-092-01

    $32.32

  16. Airmar P217 Plastic Flush Mount Housing - 33-217

    $32.32

  17. Airmar P17 Plastic Low-Profile Housing - 33-417

    $32.32

  18. Airmar P39 Replacement Bracket Kit - 33-477-01

    $32.32
    1

  19. Airmar B122 Low-Profile Flange Adapter Ring - 33-634-02

    $32.32

  20. Airmar S63/P37/P52 Spare Wheel Kit - 33-110

    $33.03

  21. Airmar P39 Transom Wheel Assembly - 33-473-01

    $33.03
    1

  22. Airmar ST800 Blanking Plug Assembly - 33-481-01

    $33.75
    2

  23. Airmar Replacement Blanking Plug Assembly with Valve - 33-482-01

    $35.65
    1

  24. Standard Horizon External GPS Antenna - SCU-38

    $38.67
    0

  25. Airmar Raymarine ST600 Spare Wheel Kit - 33-250

    $38.67
    1

  26. Airmar ST600 Blanking Plug Assembly - 20-600

    $39.02

  27. Airmar ST300 Shorty Blanking Plug Assembly - 33-386-01

    $40.08

  28. Airmar ST-800 Paddlewheel Kit - 33-493-01

    $40.08
    4

  29. Airmar Gen2 DST810/ST900/ST950 Replacement Paddlewheel - 33-HP-PADDLEWHEEL

    $43.49
    1

  30. Airmar ST850 Blanking Plug Assembly - 33-522-01

    $46.61

  31. Veratron OceanLink TFT Display Bezel - 7" - A2C1697540001

    $50.22
    0

  32. Veratron AcquaLink TFT Display Bezel - 7" - A2C3995200001

    $53.64
    0

  33. Airmar S63 Transom Mount Speed Sensor - S63-0

    $58.41

  34. Airmar ST850 Paddlewheel & Valve Kit - 33-536-01

    $58.41

  35. Davis Instruments 4-Conductor Extension Cable

    $59.80 - $141.58

  36. Airmar ST800 Installation Kit - 20-410-01

    $78.70

  37. Airmar P617V Plastic Low-Profile Housing with Valve - 33-510-01

    $80.16
    2

  38. Davis Instruments RJ Connector Temperature Probe

    $85.18 - $161.32

  39. Airmar Wiring Box with Screw Terminals - 33-035-BOX

    $92.32
    1

  40. Davis Instruments Sensor Mounting Shelf - 6673

    $110.56
  41. 9% off

    Maptech Navigation USB GPS Receiver - MTUSBGPS

    $134.53
    $121.14
    0

  42. HawkEye DepthTrax 2B Depth Finder - DT2B-TM

    $128.91
    7

  43. Airmar ST300 Replacement Insert - ST300-INS-0

    $131.02
    1

  44. Standard Horizon GPS Smart Antenna - SCU-31

    $140.17
    1

  45. Davis Instruments 2-Wire Termination Temperature Probe - 6470

    $145.81

  46. Davis Instruments Weather Station Mounting Pole Kit - 7717

    $145.83

  47. Scout GPS/GLONASS Antenna - 3" (7 cm) - NAV-6

    $147.22
    1

  48. Lowrance Fluid Level Sensor - 000-11518-001

    $152.86
    0
 
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About Instruments

Marine Instruments

Sailing navigation is made easy with a variety of electronics offered by Defender. Marine navigation tools, bundles, and a full line of accessories cover all boat navigation needs. Multifunction marine instruments offer an alternative when installation space and budget are tight.

Which marine instruments are important to sailing?

Anyone on the water can benefit from as much information as possible but it could be argued that sailing navigation and wind indicators are the essentials to skippers on sailboats. Depth finders and speed monitors might be seen as sailing frivolity, but any sailor would be happy to have these marine instruments in their electronics package.

Sailing into the wind

Technically there is no such thing. Sailing directly into the wind cuts down the angle and doesn't allow the sails to capture the wind, which propels the boat. Here's where sailing navigation tools and packages come into play. Wind indicators monitor the strength and direction of the wind while navigating correctly to capture the wind is essential.

How to navigate your cruise

Here's where depth finders, plotters, and temperature gauges become a more important part of your sailing navigation package. Cruising on your sailboat means less about wind and more about other boats, obstacles, and, of course, finding your way home. Defender Marine offers full sailboat navigation packages and multifunction marine electronics units for the family sailboat and the competitive team!

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