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FLAT-BOTTOM HULL
DEEP-"VEE" HULL
6. Route the transducer cable to the sonar unit. Keep the transducer
cable away from other wiring on the boat, if possible. Electrical noise
from engine wiring or bilge pumps can be picked up on the trans-
ducer cable. This can show up as unwanted interference on the
sonar display.
NOTE: Some aluminum boats with strakes or ribs on the outside of the
hull create large amounts of turbulence at high speed. These boats
typically have large outboard motors capable of propelling the boat at
speeds over 35 mph. The transducer should be mounted as far below
the hull as possible on these boats. This will place the face of the
transducer below the turbulent water, allowing the sonar unit to work at
high speeds.
7. Make a test run to determine the results. If there is interference on the
display when running the boat at high speed, try lowering or changing
the angle of the transducer.
Periodically wash the transducer's face with soap and water to
remove any oil film. Oil and dirt on the face will reduce the
sensitivity or may even prevent operation.
NOTE
CAUTION!
MAKE CERTAIN TO CLAMP THE TRANSDUCER CABLE TO
THE TRANSOM NEAR THE TRANSDUCER. THIS WILL HELP
PREVENT THE TRANSDUCER FROM ENTERING THE BOAT IF
IT IS KNOCKED OFF AT HIGH SPEED.