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Date of Publication:2022-10-10

Journal:中国海洋平台

Affiliation of Author(s):运载工程与力学学部

Volume:32

Issue:4

Page Number:34-42

ISSN No.:1001-4500

Abstract:In order to ensure the safety during the offloading in tandem between FPSO and shuttle tanker,a tug is needed to be located at the stern of the shuttle tanker to help pull to keep suitable distance and deviation of angle with FPSO all the time.Tug is indispensable for such offloading operation.It is chosen empirically and lack of theoretical calculation and assessment.Based on the established mathematical equilibrium model,the required pull force for the tug is presented according to the different angle of rotation.The geometrical model of shuttle tanker and FPSO based on CATIA are constructed and wave force is calculated by AQWA-Workbench tools respectively under the given extreme operation conditions and parameters.Some advice is given for tug choice.The results are practical for FPSO offloading management to avoid unnecessary bigger bollard pull force for tug and at the same time ensure safety for offloading operation.

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