Naslov
THE LIGHTSHIP MASS CALCULATION MODEL OF A MERCHANT SHIP BY EMPIRICAL METHODS

Autori
Slapničar, Vedran ; Zadro, Katarina ; Ložar, Viktor, Ćatipović, Ivo

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
International Maritime Science Conference / - , 2021, 73-87

Skup
International Maritime Science Conference

Mjesto i datum
Varna, Bugarska, 09.09.2021. - 10.09.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
preliminary ship design, database, lightship mass calculation, regression analysis, empirical methods, calibration, merchant ships, bulk carriers, container ships, tankers

Sažetak
Estimating the lightship mass is an important factor in the early stage of ship design given its impact on shipbuilding costs. The mass of the hull and equipment, as well as its distribution, affects the hull strength, deadweight, and stability of the ship. Furthermore, a good estimate of the lightship mass in the preliminary phase is very important for defining the construction costs as accurately as possible. As the time available to the designer in the conceptual or preliminary phase of ship design is often limited, the methods used to determine the lightship mass must be reliable, fast, and effective. The paper presents and analyzes methods for estimating the lightship mass, that is based on empirical data of built ships. Several empirical methods were combined and calibrated to establish by the least-squares method which combination gives the value of the lightship mass closest to the one given in the collected database for three types of merchant ships: tankers, bulk carriers, and container ships. The paper presents the results of the calculations of the masses of hull steel, outfitting, machinery, and superstructure. It can be concluded that the presented model for all three types of merchant ships gives satisfactory results.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

POVEZANOST RADA