Ontario Marinas and Marine Services

Fish Finder Manuals

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Fish finder manuals are designed so that you can find the information you need quickly and easily, so that you spend more time boating and fishing than reading.

How does SONAR work?

SONAR (SOund NAvigation RAnging) Sound moves thru water at about 4920 feet/second (almost a mile).

Your fish finder measures the amount of time it takes for the sound pulse it sends out to travel to the bottom and back.

In simple terms your fish finder acts first like a speaker (sending the sound out) and then switches over to a microphone (picking the sound up).

Now anything that gets in the path, sends back an echo which can be interpreted by your fish finders electronics as the bottom, fish, rocks and logs.

Humminbird Fish Finder Manuals

Fishing Buddy
IceFlasher Series
Inside Hull Mount
Matrix 10 – 37
Matrix 15
Matrix 25
Matrix 35
Matrix 47
Matrix 55 and 65
Matrix 67 GPS
Matix 77C
Matrix 87C
Matrix 97 GPS
100 SX
200 DX Dual
141C Fish Finder
Humminbird 161
Humminbird 323
343C
363 GPS
383C GPS
500 Series
580 Fish Finder
595C Fish Finder
717 and 727
737 GPS
747 and 777C2
757-787C GPS
767 GPS
797C2 GPS
858C, 898C SI
917C SI Combo
931C, 931DF, 937c, 937D
947C
997C SI Combo
981
1155C
1157C and 1197C

Lowrance Fish Finder Manuals

It doesn’t matter if you are a novice or a pro angler, you will find that your Lowrance Fish Finder/GPS is easy to use and capable of handling all your navigation and sonar needs. The manuals are designed so that you can find the information you need quickly and easily, so that you spend more time boating and fishing than reading. In fact all Lowrance sonars have an auto mode that finds and displays the bottom, fish, structures and more right out of the box.

Lowrance LCX19
LCX 104C
LCX 110C, 111C
LCX 112C, 113C
LCX 25C, 26C HD
LCX 27C, LCX 28C
LCX 37C, LCX 38C
LMS 320
Lowrance X51
Lowrance X65
Lowrance X67C
Lowrance X125

Eagle Fish Finder Manuals

Your unit is a high-quality sonar designed for both professional and novice fishermen. All Eagle sonars have an automatic mode that finds and displays the bottom, fish, underwater structure and more – right out of the box. All you have to do is press the on (PWR) key.

Eagle Cuda 128
Cuda 242
Cuda 300
Eagle FishMark 320
Sea Finder 500C

Miscellaneous Manuals

Fishing Knots Manual
Filtering Electrical Interference

If you are having a hard time understanding the terminology used in your fish finder manual, I would suggest you visit our Glossary page by clicking here.

I am sure the information will aid in clarifying your understanding and assist in getting the optimum results which after all is to catch more fish.

Boaters Action Plan

Fishing Lures Spinner Baits, 16 Pcs Hard Metal Spinner Baits
16 Pcs Hard Metal Spinner Baits


Ugly Stik GX2 Spinning Fishing Rod
Ugly Stik GX2 Spinning Fishing Rod


Plusinno Fishing Pole
PLUSINNO Telescopic Fishing Pole


Garmin GPSMAP 66i, GPS Handheld and Satellite Communicator
Garmin GPSMAP 66i GPS Handheld