Furuno 10n Manuel D’Utilisation

 

 

 

This type of mounting provides the best performance of all, since the transducer protrudes 
from the hull and the effect of air bubbles and turbulence near the hull skin is reduced. 
When the boat has a keel, the transducer should be at least 30 cm away from it. Typical 
thru-hull mountings are shown in the figure on the next page. 
 
The performance of this sounder is directly related to the mounting location of the 
transducer, especially for high-speed cruising. The installation should be planned in 
advance, keeping the standard cable length (8 m) and the following factors in mind: 
 
•    Air bubbles and turbulence caused by movement of the boat seriously degrade the 

sounding capability of the transducer. The transducer should, therefore, be located in a 
position where water flow is the smoothest. Noise from the propellers also adversely 
affects performance and the transducer should not be mounted nearby. The lifting 
strakes are notorious for creating acoustic noise, and these must be avoided by keeping 
the transducer inboard of them. 

•    The transducer must always remain submerged, even when the boat is rolling, pitching 

or up on a plane at high speed. 

•    A practical choice would be somewhere between 1/3 and 1/2 of the boat’s length from 

the stern. For planing hulls, a practical location is generally rather far astern, so that the 
transducer is always in water regardless of the planing attitude. 

 

22

24

120

120

68

68

87

30

28

All dimensions
in millimeters

Ship's
bow