11
Note: The areas being chosen to mount the transducer should be free from turbulent water.
Any ribs, strakes and other protrusions that may create turbulence should be avoided.
With double-hulled boat, you could make the shoot-thru-hull installation only when some
flotation materials (such as plywood, balsa, wood or foam) are removed from the chosen
area. (figure-9)
Warning: contact your boat dealers to get the full specifications of your boat. And never try
to remove any materials from the inner hull before you completely know about the
composition of your hull.
Chose an appropriate position in the inner hull, then removing the inner layer of fiberglass
and flotation materials, thus the surface of outer hull exposed.
Epoxy the transducer to the outer layer of fiberglass; press the transducer with a slight
twisting motion to purge any trapped air from underneath.
After the epoxy cures for 24hours and be certain that the epoxy is solidified, fill the
remaining space with resin. And then the installation of transducer is finished. With the
shoot-thru-hull installation, the transducer will not be able to adjust as soon as it is fixed. So,
test before final installation is necessary.
2. Find a better mounting location
a) Fill the hull with enough water to submerge the transducer.
b) In the sump of the boat, place the transducer at the identified mounting position, face
down. To make the transducer in position, some heavy object could be used.
c) Turn on the sonar unit, run the boat to water area that the depth is about 20 feet to test
whether the sonar display is normal (if needed, please adjust the sensitivity and depth
range). If not, check the connection between the control head and the transducer.
d) Run the boat at various speed to see the sonar display, if such phenomena appears:
sonar strength obviously decreasing, signal losing, bottom missing, then
note the
speed and choose another location for the transducer.
e) Repeat step 4 until you get the best mounting location for the transducer.
The Permanent Shoot-Thru-Hull installation
a) make sure the surface of the chosen location is clear dry and free of any oil, then sand
the mounting surface of transducer with 100 grit sandpaper until it looks very clean and
flat.
b) Wipe off the sand debris on mounting surface with a piece of cloth,
and then clean the
Figure-9
