Prerequisites
The vessel is in dry dock. The SU90 system is turned off. No special tools are required for this task. If the sacrificial anodes need to be replaced, you will need the necessary spare items as well as mounting materials. Contact your local dealer or distributor, or the Kongsberg Maritime support organization, for spare parts.
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Kongsberg Maritime part number: 629-204660 |
Two persons are needed to do the task.
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One person must stay in the sonar room to operate the hull unit. |
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One person must stay in the dry dock, under the hull, to make sure that the transducer is not lowered too far down. |
Proper oral communication must exist between the sonar room and the dry dock personnel.
Context
Sacrificial anodes are slowly disintegrating during normal wear and tear. They must be inspected whenever the vessel is in dry dock. If the sacrificial anodes are damaged or severely corroded you must replace them. We recommend that the sacrificial anodes are replaced when 1/3 of their bodies have been spent.
Procedure
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Make sure that all power to the hull unit is disconnected. |
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Use the hand crank to lower the transducer. |
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Access the location of the sacrificial anodes.
They are mounted under the mounting flange at the top of the installation trunk.
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Inspect the physical conditions of the sacrificial anodes.
Check for damage and corrosion.
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Replace the anodes if they are severely corroded. |
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Use the hand crank to hoist the transducer. |