Print Email Facebook Twitter Effects of adverse sea conditions on propulsion and manoeuvring performance of low-powered ocean-going cargo ship Title Effects of adverse sea conditions on propulsion and manoeuvring performance of low-powered ocean-going cargo ship Author Sui, Congbiao (TU Delft Ship Design, Production and Operations; Harbin Engineering University) de Vos, P. (TU Delft Ship Design, Production and Operations) Hopman, J.J. (TU Delft Ship Design, Production and Operations) Visser, K. (TU Delft Ship Design, Production and Operations) Stapersma, D. (TU Delft Ship Design, Production and Operations) Ding, Yu (Harbin Engineering University) Date 2022 Abstract Current EEDI (Energy Efficiency Design Index) regulations striving to reduce the installed engine power on new ships for a low EEDI may lead to underpowered ships having insufficient power when operating in adverse sea conditions. In this paper, the operational safety of a low-powered ocean-going cargo ship operating in adverse sea conditions has been investigated using an integrated ship propulsion, manoeuvring and sea state model. The ship propulsion and manoeuvring performance, especially the dynamic engine behaviour, when the ship is sailing in heavy weather and turning into head sea, have been studied. According to the results, the dynamic engine behaviour should be considered when assessing the ship operational safety, as the static engine operating envelope is inadequate for the safety assessment. The impact of PTO/PTI (power-take-off/in) operation and changing propeller pitch on the ship thrust availability in adverse sea conditions have also been investigated. To protect the engine from mechanical and thermal overloading, compressor surge and over-speeding during dynamic ship operations and/or in high sea states, the engine and propeller should be carefully controlled. The paper shows that if in (heavy) adverse weather the propeller pitch can be reduced or if the shaft generator can work as a motor (PTI), more thrust can be developed which can significantly improve the operational safety of the ship. Subject Adverse seaEngine dynamic performanceLow-powered shipMinimum propulsion powerShip operational safety To reference this document use: http://resolver.tudelft.nl/uuid:1541ff0e-a63d-4738-8bf2-7694fdefe400 DOI https://doi.org/10.1016/j.oceaneng.2022.111348 Embargo date 2023-07-01 ISSN 0029-8018 Source Ocean Engineering, 254 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Congbiao Sui, P. de Vos, J.J. Hopman, K. Visser, D. Stapersma, Yu Ding Files PDF 1_s2.0_S0029801822007387_main.pdf 24.59 MB Close viewer /islandora/object/uuid:1541ff0e-a63d-4738-8bf2-7694fdefe400/datastream/OBJ/view