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Section 3 Installation

Thru-hull

transducer

Hull material

Fairing block

shaped to hull

curvature

Backing block

Place sealing

compund between

block and hull

Sailboats

Planing hulls

Tri-hulls

Best locations for

thru-hull

transducers

Figure 3-12 shows best location for the thru-hull transducer.

Best locations vary with the type of vessel. On any vessel, try to find a spot

with the smallest deadrise angle.

Figure 3-12

Using a Fairing Block

If necessary, use a fairing block as shown in Figure 3-13 to keep the

transducer perpendicular to the waterline, especially if the deadrise angle at the

mounting point exceeds 10 degrees.

Fairing blocks are usually constructed of wood (such as mahogany) and

shaped to both reduce drag and minimize aeration on the transducer face. Best

results are obtained with sharp vertical leading edge fairings because this wedge

shape helps divert aerated water off to the sides of the transducer away from the

acoustic face.

Figure 3-13

JRC FF50 User Manual

Other manuals for JRC FF50