In general, the most important factor is to avoid air bubbles in front of the transducer face. For this reason, the recommended transducer location is normally in the fore part of the hull, well ahead of the noise created by the bow wave.
The maximum distance from the bow is normally equal to one third of the total water line length of the hull.
NoteMounting the transducer more than 10–15 meters from the bow may cause problems with the turbulent flow.
|
C |
Hull length at water line |
|
D |
Maximum 1/3 of the hull length at water line (C) |
If the vessel hull has a bulbous bow, this may well be a good transducer location, but also in this case the flow pattern of the aerated water must be taken into consideration. The foremost part of the bulb is often a good location.
This applies to the vessel in normal trim and speed.
ImportantThe transducer must not have a negative inclination angle compared to water flow.
Do not place a transducer in the vicinity of protruding objects, and especially not close behind them.
Make sure that the surface of the resulting installation is as smooth and streamlined as possible.