• | Lifting arrangement |
• | Welding equipment |
1 | Define the physical location of the mounting flange. This location must be carefully selected. The decision must be based on the general principles outlined in chapter Preparations and all relevant knowledge about the vessel construction.
Note
All information related to practical and theoretical noise patterns along the hull must be taken into consideration.
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2 | Adapt the mounting flange to fit the hull. Alternatively, design and manufacture a custom mounting flange.
Note
Keep the height of the mounting flange as small as possible, as this will increase the operational depth of the transducer.
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3 | Cut out a hole in the vessel’s hull with a diameter large enough to accommodate the mounting flange. The exact size of the hole must be determined by the installation shipyard.
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4 | Orientate the mounting flange correctly, and weld it into position. Note
The mounting flange must be mounted so that its top mating surface is in parallel with the sea surface during normal operating
conditions.
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5 | Check the upper surface of the mounting flange to ensure that it is level, undamaged and clean. |
6 | Cover the upper surface of the mounting flange with a wooden plate to protect it |
7 | Add support frames and stiffeners to secure the construction. |
8 | Depending on the shape of the hull, we recommend that you fit a steel blister for protection. The blister must be designed by the installation shipyard. It must be welded to the shell plating. The blister may be an open type, or it can be filled with oil to prevent corrosion. This last method provides excellent protection, and simplifies maintenance.
Note
Make sure that the hull plating surrounding the mounting flange is even and smooth without protruding objects that can cause
noise. Objects protruding from the hull will generate turbulence and flow noise. This will reduce the overall performance of your system. If necessary, grind and polish all surfaces.
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9 | As soon as all installation, welding and grinding has been done, prime or paint the mounting flange and the surrounding area using a high quality protective coating. |
10 | Verify that the mounting flange has been installed correctly.
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