Installation manual

Simrad PI54
122
851-165187 / Rev.A
Deployment over the side
Unlike permanently mounted hydrophones, the portable
hydrophone has an omni-directional beam. It can therefore be
lowered below the level of high underwater noise and air
bubbles generated by the main propeller and bow/sternthrusters
which can block reception of hull mounted units.
(A) = Portable hydrophone
(P) = Port
(S) = Starboard
When the seine is normally located forward of the starboard
beam when pursing the following information should be taken
into consideration:
• The portable hydrophone is to be deployed over the port side
of the vessel, midships, as far away from bow or stern
thruster(s) used when pursing as possible.
• Note that the portable hydrophone’s location is opposite to
that of a permanently mounted unit. When pursing to
starboard the hydrophone is normally lowered over on the
port side of the vessel.
• The hydrophone cable should be made fast to the vessel’s
bulwarks.