Kongsberg Simrad EK80, Installation Manual

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Cables and wiring requirements
Correct wiring is crucial for the operational performance of the EK80.
All cables running between system cabinets located in different rooms and/or on different
decks must be supported and protected along their entire lengths using conduits and/or
cable trays. Note that the cables must not be installed in the vicinity of high-power
supplies and cables, antenna cables or other possible sources of interference.
All transducer cables must be run in steel conduits.
For more detailed information about cables and wiring, refer to the basic cable
requirements.
Related topics
Installation requirements, page 37
Simrad EK80, page 13
Compass deviation requirements
EK80 units that are installed on the bridge may have an effect on the compass.
Once the installation is complete, the vessel must be swung with the EK80 in both
operative and inoperative modes. The shipowner and captain are responsible for
updating the compass deviation table accordingly with regard to the vessel’s national
registry and corresponding maritime authority.
Related topics
Installation requirements, page 37
Simrad EK80, page 13
Noise sources
The operational performance of the EK80 Wide band scientific echo sounder depends on
the noise conditions. It is essential that the noise signature is as low as possible.
Vessel noise
The vessel’s hull, rudder(s) and propeller(s) must be thoroughly inspected in dry dock
prior to installation.
Roughness below the water-line deformities in the shell plating and protruding obstacles
can create underwater noise. These sources of turbulence must be smoothed or removed
as best as possible.
Note
It is especially important that the propeller(s) are not pitted or damaged.
Simrad EK80 Installation Manual