Installation manual

Trawl hydrophone installation
97
851-165187 / Rev.A
The farther away from the hull a hydrophone is mounted the
more the effects of turbulence are reduced. Simrad recommends
that hydrophones be installed as deeply as possible (preferably
600 mm, but not less than 400 mm) from the vessel’s outer hull.
When ever possible, the distance from the keel to the bottom of
the hydrophone blister should not exceed 50 mm.
The section regarding hydrophone coverage including
horizontal orientation and tilt also applies to hydrophones
mounted in blisters.