Fouling organisms and effects on the hull of the R/V K. Piri Reis

Tekne yüzeyine yapışan fouling organizmalar istenmeyen etkilere neden olurlar. R/V K. Piri Reis üzerindeki fouling organizmaların etkisi geminin havuzlandığı dönemde araştırılmıştır. Geminin boyalı ve boyasız kısımlarına yerleşen ve fouling olayını oluşturan topluluklar hakkında bilgi sahibi olabilmek için bu kısımlar incelenmiştir. Her iki kısımda da toplam 8 takson belirlenmiştir. Hydroides elegans ve Balanus amphitrite hemen hemen toplam bio-kütlenin%100 ünü oluşturur. Bu iki türün bio-kütlelerinin yüzde oranlan ise boyalı ve boyasız kısımlarda farklıdır. Boyalı kısımdaki B. amphitrite bireyleri küçük yapışma düzlemine sahiptir ve boyanmamış kışıma göre daha fazla sayıda bireyle temsil edilir. Pürüzlülük ölçümleri ve hesaplarından, geminin bu ilave direnç nedeniyle performansındaki düşüş%30 civarındadır. Bu sonuç, aynı çevresel koşullarda geminin temizleme işleminden önceki ve sonraki durumlarında ölçülen hızlan arasındaki farktan da anlaşılır.

Anahtar Kelimeler:

balık tekneleri, fouling, pürüzlülük, sucul organizmalar

R/V K. Piri Reis gemisindeki fouling organizmalar ve etkileri

Fouling organisms that attach to the hull surfaces cause undesirable affects. In - order to determine the affect of fouling organisms on the hull the R/V K. Piri Reis was investigated while in dry-dock. The treated and untreated parts of the hull were examined to contribute to the knowledge on the settled fouling community. A total of 8 taxa were recorded from two parts. Hydroides elegans and Balanus amphitrite comprised almost 100%of the total biomass. The biomass percentages of these two species varied between the treated and untreated surfaces. B. amphitrite specimens have small basal plates in the treated part and they are represented by a higher number of individuals according to observation on the untreated part. From the roughness measurements and calculations, it was determined that the performance loss due to this additional resistance was about the%30. This result was confirmed by differences in ship speed measurements before and after the cleaning operation in the same environmental condition.

Keywords:

fishing vessels, fouling, roughness, aquatic organisms,

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