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SECTION TWO Installing the transducer
Installing a
transducer
Figure 3: Typical finished thru-hull installation with a fairing block (Airmar B44V)
Page 10
A flat-bottom hull provides the best environment for mounting
the transducer: It provides a horizontal surface and a constant
water flow over the transducer, with little turbulence (see
Figure 2 for the recommended transducer incline angle). If the
vessel has a deadrise angle greater than 5 degrees, mount the
transducer on a fairing block to create a horizontal surface and
keep the transducer perpendicular to the waterline (see
Figure 3). You must order the fairing block, if needed, from the
transducer's manufacturer.
(Load Waterline Length)
Figure 2: Recommended transducer incline angle
backing
block
hull
fairing thickness
at narrowest point
6–12mm (1/4–1/2")
Deadrise angle and fairing thickness (B44V shown)
3° incline
angle
1/3 aft
LWL
slope of hull
parallel to
waterline
fairing
multisensor
490 INSTALLATION MANUAL, Revision B2
deadrise
angle
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