Installation manual

Purse seine hydrophone installation
61
851-165187 / Rev.A
Location and marking
After installation, the location of hydrophones should be clearly
marked on the vessel’s hull (above the water-line) directly over
them. This information will help prevent hydrophone damage
when dry-docking the vessel. It is very important to amend the
docking-plans of larger vessels to also reflect this information so
that blocks will not be placed in the vicinity of hydrophones,
fins, deflection plates or other associated appendages.
After installation / Sea trials
Once the installation is complete and the vessel afloat, the
system’s performance should be documented. Refer to the
appropriate section in the PI54 Operation manual regarding the
measurement of a noise vs. speed curve.