Sailboats; Powerboats - Standard Horizon DS41 Owner's Manual

Sailboats

On sailboats, the transducer should be mounted
where the acoustic beam will not be shaded by
the keel. A spot forward of the keel is usually
best. Try to find an accessible spot with a
minimum deadrise angle. See Figure 4.

Powerboats

On IO's transducers mounted close to the engine
usually yield good results. On inboards, always
mount the transducer well ahead of the propeller.
Turbulence from propellers seriously degrades
transducer performance. Make sure that the
Recommended Area
SAILBOAT
FIN KEEL
FULL KEEL
Figure 4. Sailboat Transducer
12 DS41 Owner's Manual
Recommended Area
Recommended Area
Figure 6. Transom Mount Transducer Location
transducer is not shaded by the prop shaft(s).
On displacement hull powerboats (such as
trawlers), the transducer should be mounted
amidships, relatively close to the keel (centerline
of the hull).
On planing powerboat hulls, the transducer
should be mounted well aft and close to the keel
to ensure that the transducer is in contact with
water at higher boat speeds. If the vessel is
capable of speeds greater than 25 knots, you
may wish to review installation location and
operational results on similar boats before
proceeding. See Figure 5.
Recommended Area
IO's and OUTBOARDS
Recommended Area
INBOARD PLANING HULLS
INBOARD DISPLACEMENT HULLS
Figure 5. Powerboat Transducer
TRANSDUCER
2" [50mm]
minimum
Recommended Area