Whiteline; Thermoclines - Garmin Fishfinder 160C Owner's Manual

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Whiteline

The Fishfinder 160C can help you to determine if the bottom is hard

or soft. When the sonar sound waves are reflected back by the bottom,

a hard bottom returns a stronger signal than a soft bottom. A thin

whiteline indicates a softer bottom while a thick whiteline indicates

a harder bottom. Normally, a red line shows the point where water

meets the bottom. This line follows the bottom contour, along with

any significant objects lying on the bottom. The unit uses the whiteline

function to make the bottom layer information easier to distinguish.

With the Fishfinder 160C, active whiteline helps accentuate where

strong signals are located, which makes bottom type determination

easier. The example below shows the bottom return with and without

the whiteline activated.

Whiteline

Hard Bottom

Soft Bottom

Fishfinder 160C Owner's Manual

Whiteline Turned Off

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Garmin's See-Thru technology allows the Fishfinder 160C to "see"

through thermoclines and helps locate fish where they live; and fish

love thermoclines!

A rough definition of a thermocline is a break in water where the

water temperature changes faster than the water above it.

nderstAndIng the

IshfInder And

Thermocline

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