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Opisuje se ispitivanje provedeno u svrhu određivanja stanja kamene zaštite (školjere) lukobrana Kaše koji je kroz povijest štitio od morskih valova luku Dubrovnik. Lukobran je oštećen i treba ga sanirati. Osim određivanja stanja školjere ispitivanje je provedeno i radi utvrđivanja valne klime ispred lukobrana. Na temelju dugoročne valne klime definirano je stanje lukobrana u odnosu na projektno. Zaključeno je da školjeru treba zamijeniti ili dodati krupniju na cijelom pokosu., The testing conducted to determine condition of riprap at Kaše breakwater, which has been protecting Dubrovnik port against wave action through many centuries, is described. The breakwater is damaged and has to be remedied. In addition to inspection of riprap condition, the wave climate in front of the breakwater was also analyzed. The breakwater condition as related to design state was defined based on the long-term wave climate information. It was concluded that riprap must either be replaced or strengthened by adding bigger stone blocks along the entire slope.

Dubrovačka je luka tijekom svoje duge povijesti od antike do danas bila u funkciji, a u nju su uplovljavali brodovi iz raznih povijesnih epoha. Da bi udovoljila zahtjevima ere velikih jedrenjaka kao što su bili galijun ili karaka, uređuje se luka prema nacrtu Paskoja Miličevića, poznatoga dubrovačkog graditelja, godine 1484. Najvažnji objekt koji se tad gradi je valobran Kaše; on je i danas, poslije više od 500 godina, u funkciji. Ima više teza o gradnji toga valobrana i u ovomu se članku iznose neke dosadašnje spoznaje, ali i one nove do danas neobjavljene. Preinake u luci događaju se tek u 19. stoljeću da bi se udovoljilo zahtjevima što ih postavljaju parobrodi. Tad se gradi lukobran Porporela i obala ispred Velikog arsenala i Fontika., The Port of Dubrovnik during its long history from antiquity to the present was functioning with ships from historic epochs entering it. To meet the needs of big sailing-ship era, such as gallery or karaka , the port was arranged in 1484 according to the design of Pasko Miličević, a famous Ragusan constructor. The most important object which was being built at that time was the seawall Kaše; it is also today, after more than 500 years in service. There are a number of thesis about building of the seawall and this article deals with some recent insights, but also with those not published up to the present day. The reconstruction in the port happened not earlier than 19th century to meet the standards established by the steamships. Then the breakwater Porporela was being built and the coast in front of Big Arsenal and Fontika.