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BOAT'S DIRECTION OF TRAVELBOAT'S DIRECTION OF TRAVEL
BOAT'S DIRECTION OF TRAVELBOAT'S DIRECTION OF TRAVEL
BOAT'S DIRECTION OF TRAVEL
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FISH ARCHESFISH ARCHES
FISH ARCHESFISH ARCHES
FISH ARCHES
Fish arches are created when the cone of sound passes over a fish.
The distance to a fish when the cone first strikes it is shown as "A"
below. When the center of the cone strikes the fish, the distance is
shorter as shown "B". As the cone leaves the fish, the distance in-
creases again as shown in "C".
When the Fish I.D. mode is off, the depth of the water will affect the size
and shape of the fish arch due to the cone angle diameter. For example,
if the cone passes over a fish in shallow water, the signal displayed on
the X-45 may not arch at all. This is due to the narrow cone diameter
and the resolution limitations of the display.
Very small fish probably will not arch at all. Medium sized fish will show
a partial arch, or a shape similar to an arch if they’re in deep water.