APPLIED ACOUSTICS SYSTEMS Easytrak Nexus Lite 2683, Operation Manual

Page: 15 / 124

2695 Series Operation Manual
EZT-2695-8000/1
Page 15 of 124
Pole Mounted – Over The Side
The Easytrak transducer can be fixed over the side of a ship with a suitable pole. Ensure the
transducer is aft of the pole and that the pole doesn’t protrude beyond the face of the transducer.
The diameter of the pole will depend on the length required and the anticipated maximum speed of
the ship. It is recommended that the pole be secured by cables fore and aft to prevent bending
and strumming when the ship is underway.
Ensure that when deployed the transducer is at least 1 metre below the draft of the vessel and that
it has clear horizontal visibility through 360°. Ensure the alignment mark on the transducer is inline
(forward) with the forward / aft line of the vessel. Extreme care has to be taken in shallow water
that the transducer does not strike the seabed.
See appendix A and B for mounting bracket dimensions.
Pole Mounted – Through A Gate Valve
Ensure the gate valve is of a suitable diameter to take the transducer and any mounting hardware.
The transducer should be mounted on a suitable shaft; see appendix C for transceiver mounting
dimensions.
Ensure that when deployed, the transducer’s black potted end is below the draft of the vessel by at
least 1 meter and that it has clear horizontal visibility through 360°.
The gate valve’s deployment system must be designed to ensure that the alignment mark on the
transducer is inline (forward) with the forward / aft line when positioned through the gate valve.
Note: Please see Section 8 Calibration.