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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. Please see figure-8.
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.
(figure-8)
inner hull Resin
flotation material expoxy outer hull
