Održavanje sustava zaštite oplakane površine brodova od obraštanja

master's thesis

• Title (english): Maintenance of the ship wetted surface antifouling protection
• Author: Ella Ilić
• Mentor: Neven Hadžić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2024-05-17, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Shipbuilding; Construction and Maintenance Technology for Floating and Maritime Structures

Abstract

Operativna svojstva broda određuju isplativost broda, a brodovlasniku je u cilju postići
najveću zaradu uz najmanje troškove. Svaka površina uronjena u vodu obrast će. Tako će se na
oplakanu površinu broda nastaniti morski organizmi. Uz operativne troškove i ekonomsku
problematiku ove teme, sagledan je i aspekt biološkog utjecaja obraštaja. Vodeće svjetske
organizacije za zaštitu okoliša svakim danom postrožuju regulative vezane uz razvoj
stakleničkih plinova brodova. Posljedično, cilj je izbjeći moguće poreze na količine emisija. U
ovom diplomskom radu istražena je literatura vezana uz obraštanje oplakane površine broda, te
faktore koji utječu na hidrodinamiku broda. Također obrađene su metode zaštite oplakane
površine broda od obraštanja te njihov utjecaj na okoliš. U eksperimentalnom dijelu validiran
je matematički model računanja najisplativijeg perioda dokovanja. Model je validiran na
temelju dokovanja MB Aurum Sky, u brodogradilištu Iskra, u Šibeniku. Metoda dobivanja
povećanja potrebne snage, uspoređena je sa stvarnim podacima povećanja snage. Na kraju su
uspoređeni troškovi u službi za dobivanje najisplativijeg perioda dokovanja.

Abstract (english)

The operational characteristics of a ship determine its profitability. The shipowner's goal
is to achieve the highest profit while minimizing expenses. Fouling occurs on every submerged
surface, with marine organisms settling on the ship's hull. In addition to the operational costs
and economic considerations, this thesis also addresses the biological impact of fouling.
Leading environmental protection organizations worldwide are increasingly tightening
regulations concerning greenhouse gas emissions from ships. Consequently, the aim is to avoid
possible taxes on emissions amounts. This thesis analyzes the literature addressing fouling on
the submerged surfaces of ships and the factors influencing ship hydrodynamics. Also methods
for protecting the painted surfaces of ship hulls from fouling are discussed including their
environmental impact. The experimental part validates a mathematical model for calculating
the most profitable docking period based on the docking of the MV Aurum Sky at the Iskra
shipyard in Šibenik. The method for obtaining the required power increase is compared with
the actual power increase data. Finally, the evaluated maintenance costs were compared with
operational ones to obtain the most profitable docking period.

• Keywords: brod; obraštanje; sustav protiv obraštanja; antivegetativni premazi; otpor broda; snaga pogonskog stroja; dokovanje; najisplativiji period dokovanja
• Keywords (english): ship; fouling; antifouling system; antifouling coatings; ship resistance; power; docking; most profitable docking period
• Language: croatian
• URN:NBN: urn:nbn:hr:235:260950
• Study programme: Title: Naval Architecture; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka brodogradnje (magistar/magistra inženjer/inženjerka brodogradnje)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-05-09 10:51:12