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3.7 Selecting a location for the
transducer
This product is supplied with a transom mount
transducer. The guidelines below should be followed
when selecting a location for the transducer.
Note: The transducer is not suitable for mounting
on vessels where the transom is aft of the
propeller(s).
For best performance the transducer must be
installed in a location with the least turbulence and
aeration. The most effective way to determine this
is by checking the water ow around the transom
whilst underway.
The transducer should be mounted close to
the keel (centreline) of the vessel, so that the
transducer remains fully submerged when the
vessel is turning.
The transducer must be mounted a suitable
distance from the propeller(s) to avoid wake.
For clockwise rotating propellers the transducer
should be mounted on the starboard side, for
anti-clockwise rotating propellers the transducer
should be mounted on the port side.
D12 640-1
On a twin engine vessel the transducer should be
mounted between the engines.
D12 641-1
Turbulence can also be caused by a number of
other factors such as steps, ribs, strakes, and
rows of rivets. The turbulence appears aft of these
locations.
1
2
4
3
D12 636-1
1
Step
2 Rib
3
Row of rivets
4
Strake
Air trapped under the front of the vessel can travel
under the hull and appear as aeration aft.
If installing on the step of a stepped transom,
allow sufcient room above the transducer for
transducer kick-up.
D12 644-1
Note: Optimum transducer location will
vary depending on vessel type. Optimum
transducer height and angle should be obtained
by testing the transducer with the vessel in the
water before locking the transducer’s position.
Transducer dimensions
The transducer’s dimensions including the mounting
bracket are shown below.
A
B
D12 638 -1
A
202.6 mm (8 in)
B
117.4 mm (4.6 in)
20
Dragony® 6/ Dragony® 7
20


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