Stručni rad
Preparing the Ship and Slipway for Launching After a Long Period of Construction Downtime
Jan Obič
; Uljanik brodogradnja 1856, Pula, Croatia
*
Marko Hadjina
; University of Rijeka, Faculty of Engineering, Rijeka, Croatia
Alen Grijak
; Uljanik brodogradnja 1856, Pula, Croatia
Anton Turk
; University of Rijeka, Faculty of Engineering, Rijeka, Croatia
* Dopisni autor.
Sažetak
This paper presents the preparation of a ship and slipway for launching after a long period of
construction downtime in the shipbuilding process. The research is based on the specific case of the
vessel “Novogradnja 526” at the Uljanik shipyard, where construction was suspended for a prolonged
period. This suspension required a detailed assessment of the ship’s condition and its surrounding
environment. Special attention was given to determining the ship settlement on slipway during the
period of inactivity, positioning of the vessel on bilge blocks, launch calculations, and a technical
overview of each phase of the process. Furthermore, the factors influencing the height of the ship’s
keel relative to the slipway line, i.e., the definition of the settling curve, have been analyzed. The need
for additional ballasting and work on the bilge blocks system has been presented in order to enable
launching operation that will prevent phenomena such as bow dipping or impact with the slipway.
Based on the results, it was concluded that launching process can be successfully executed if newly
defined technological guidelines are followed. Furthermore, the study confirmed that prolonged
construction delays primarily affect the ship sections most exposed to external conditions.
Ključne riječi
shipbuilding delays, ship launching, livestock carrier, ship settlement curve, slipway equipment
Hrčak ID:
347258
URI
Datum izdavanja:
19.5.2026.
Posjeta: 0 *