Fish Finder

Marine electronics,GPS & fish finder specialists 

GPS, Fish Finder, Sonar & Transducer Specialists

Fish Finder is an instrument used to locate fish underwater by detecting reflected pulses of sound energy, as in sonar. It can tell you how many fish are out there and their size. It can also tell you a lot about the spot where you are fishing, it determines the depth of the water and temperature.

GPS Chartplotter


A GPS on a boat is the main navigation tool for voyage preparation, safe passage and fishing or landmark spot locating. GPS’s units are very accurate nowadays with less than 1-metre accuracy common in most models.
In these modern times of technology, it is rare to find a “stand alone” GPS display or head unit.

Most of the GPS models on the market in all brands are combination units or colloquially called “Combos”. This means they have a GPS, Radar and fish finder all in one unit (along with many other features and variations of sounders/structure scanners etc.)

Many boaters like the functionality of a combo, however, prefer to have a dedicated fish finder when on the water so they can easily see what is going on the fishfinder or tune the sounder without swapping screens or Apps on the combo.

GPS system is the one thing that can ensure when you head home from the sea that you are heading the best and safest direction. Choose your GPS wisely and don’t skimp on this life-preserving boating system. Ask our team for any advice

Fish Finder/Sonar


Fish Finder is an instrument used to locate fish underwater by detecting reflected pulses of sound energy, as in sonar. It can tell you how many fish are out there and their approximate size. It can also tell you a lot about the spot where you are fishing, it determines the depth of the water and temperature.
A fish finder is the must have “tool of the trade” when you are on the water. A fisherman must have trust in the equipment to give reliable information about what is below their boat.
  • Clarity of the underwater images
  • Integration with other systems i.e. GPS connectivity
  • Performance at speed
  • Ease of operation whilst at sea
  • Target separation i.e. it is a large fish or lots of small fish close together
  • Accuracy of the size and species of fishing shown

Transducer:

transducer

A transducer is a sensor for the fish finder. It is an ultrasonic transmitter and receiver in one. This is a very sensitive component that can give a good or poor signal to the fish finder if it is selected for the fishing type/hull and installed professionally.

It is the Transducer that changes electrical pulses into sound waves or acoustic energy and back again.

How does it work?

 Almost every fish has an organ called an air bladder filled with gas that allows the fish to easily adjust to the water pressure at different depths. The amount of gas in the air bladder can be increased or decreased to regulate the buoyancy of the fish.
Because the air bladder contains gas, it is a drastically different density than the flesh and bone of the fish as well as the water that surrounds it. This difference in density causes the sound waves from the echosounder to bounce off the fish distinctively.

The transducer receives the echoes and the echosounder is able to recognize these differences. The echosounder, then, displays it as a fish.

Can Fish hear my transducer? Transducer image 1

No, the sound waves are ultrasonic. They are above (ultra) the sound (sonic) that human ears are able to hear. Humans can hear sound waves from 10 Hz to 20 kHz. Most fish are unable to hear frequencies higher than about 500 Hz to 1 kHz.

The ultrasonic sound waves sent out by Airmar transducers have frequencies ranging from 10,000 kHz to 2 Megahertz (200,000,000 Hz), clearly beyond the hearing of fish. However, most people can hear the transmit pulses of our 10 kHz transducers; they sound like a series of clicks.

Nautek Marine is Victoria’s leading marine service provider


nautek-marine-fish-finder-specialists-image-01


Nautek Marine is a one-stop marine service centre for all of your marine requirements, offering boat repairs, trailer repairs, electrical and shipwright services, as well as general inboard and outboard engine servicing across all engine brands.




Our knowledgeable marine technicians have experience working with a wide variety of boats and will provide you with the highest standards of service. Servicing all of Victoria’s marinas, we can also arrange an onsite visit to your powerboat or yacht for an obligation free quote at your convenience.

Our Team of Experts will ensure you have the best equipment available for success on the water.


There are advantages and disadvantages of these all-in-one systems, here are some examples of this:

                                   Advantages


  • Reduced dash space required
  • Cost-effective
  • Integration of data/information is internal to the unit
  • Less power draw on the batteries
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                                     Disadvantages


  • Splitting the screen for multiple functions makes the size small
  • In a failure of a combo unit, you lose all functions at once
  • Changing between functions can be timely and clumsy
  • Overload of the computing processor when operating lots of features at once can slow the operation down of the unit.

“We help you to find fish and improve your performance.”

No matter what you’re looking for, if it’s marine, you will find it at Nautek Marine.

Call us now and talk to one of our experts:

(03) 9580 9922

Please send us a message by filling in the form below.







Address

Factory 9 / 2 Indian Dr,
Keysborough, VIC, 3173

Phone

(03) 9580 9922

Email

theshop@nautek.com.au

Opening Hours

Monday to Friday
07:30 AM – 05:00 PM