The formation of fouling in the Baltic Sea and its prevention were investigated. It was evidenced that frequently performed soft wiping without any chemicals prevents fouling remarkably.
A wiping interval of 1 – 2 weeks was sufficient to keep the test surfaces clean, while a wiping interval of 4 weeks was found to be too long to prevent fouling.
To investigate the appearance of fouling in the Baltic Sea and to provide evidence that frequent soft wiping without any chemicals prevents fouling of surfaces.
- The test specimens, Samples 1 – 6, are kept in seawater at a depth of two meters.
- Weekly, the test specimens are lifted out of the water for actions and inspections.
- Samples 1 and 3: One half of the surface is wiped with a rag every one week. The other half is not wiped (reference)
- Samples 2 and 4: One half of the surface is wiped with a rag every four weeks. The other half is not wiped (reference)
- Samples 5 and 6: The wiping tool is rotated 45° clockwise, i.e. over one segment marked on the sheet, every one week
- The test specimens are inspected and photographed.
- The seawater temperature is measured.
- The test specimens are placed back to the seawater.