Prevention of Fouling without Chemicals

In by Solar

Product Name: Anti-fouling system for ships
Test Method: Continuous exposure to seawater, cleaning with soft wiping every 1 – 4 weeks
Client: FoulFighter Oy
Test Result:

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.

Sample 3 after the test

Sample 5 after the test

Test Purpose:

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.

Test Method in Detail:

Test Procedure

  •  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.
  •  Actions:
    • 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.