Naslov
Effect of optimal thruster location on DP operability of an offshore vessel

Autori
Mauro, Francesco ; Nabergoj, Radoslav ; Prpić-Oršić, Jasna

Kolaboracija
Department of Engineering and Architecture, University of Trieste, Trieste, Italy ; NASDIS PDS d.o.o., Izola, Slovenija

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

Izvornik
Proceedings of Maritime Technology and Engineering - MARTECH 2020 / Guedes Soares, Carlos - Lahti : CRC Press, 2021, 1-8

ISBN
9780367773779

Skup
Maritime Technology and Engineering - MARTECH 2020

Mjesto i datum
Lisabon, Portugal, 16.11.2021. - 19.11.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
optimal thruster location ; DP operability

Sažetak
In the offshore industry, the thruster layout for dynamic positioning (DP) is not optimal to reach the maximum station-keeping capability. It is possible to optimise the position of the thrusters since early design stage applying a genetic algorithm-based optimisation procedure. The enhancements due to an optimal thruster configuration can be reported in the standard capability plot format as commonly done in the offshore industry. However, besides standard capability plots, additional calculations can be performed by explicitly considering the vessel’s geographic operational areas. By adopting this novel approach, it is possible to associate to vessel’s DP capability an operability index which is specific for the considered sea area and is in analogy of that adopted for ship motion criteria. In this way, the improvements of the optimised thruster configuration can be represented in terms of the increment of DP operability index in a selected sea area, instead of the capability plot area increase for standard conditions. The procedure is here applied to a reference Pipe-lay vessel, where the thruster layout has been optimised. The improvements are reported through both conventional capability plot and newly proposed DP operability index for the North Sea area.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

POVEZANOST RADA