Maintaining The Transducer - NorthStar 491 Install Manual

SECTION TWO — Installing the transducer
Maintaining
the transducer
Using anti-fouling
paint
PAGE 8
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)
FIGURE 3: Typical finished thru-hull installation with a fairing
Do not expose the transducer's face or plastic housing to gasoline or
strong solvents, such as acetone. These solvents can penetrate and
degrade many plastics and reduce their strength.
The transducer should be coated with water-based anti-fouling paint to
prevent aquatic growth.
3˚ incline
angle
1/3 aft
LWL
(Load Waterline Length)
fairing
multisensor
block (Airmar B744V)
491 INSTALLATION MANUAL Revision A
slope of hull
deadrise
angle
parallel to
waterline