Abstract
The tests of cathodic protection were carried out with regard to the influence of the position of the anodes and the reference electrode on protective effect, potential distribution, protective current, etc. and to the protective current required while running and while stopping, with the automatic protective equipment fitted to a tugboat.
The following are the results obtained:
1) The vessel, while running, requires about double the amount of the protective current required while stopping.
2) It is desirable to set the reference electrode close to the anodes, in view of protecting the painted film.
3) It is adequate for complete protection to arrange the anodes zigzag with the spacing of about 4 meters.
