Author(s): Yan Qu; Dongchang Chen; Haoyangyin; Ziwei Huang
Linked Author(s):
Keywords:
Abstract: This paper presents a mooring analysis result of a new drilling Semi-sub concept which intended to operate in the arctic region. The SEMI was designed to be able to operate in open water season and in level ice less than 1 meter thick in the Arctic. In order to reduce the ice load on the SEMI, 6 inclined columns were designed to break the ice sheet in a bending failure mode. A total of 12 mooring lines were considered to be installed on the SEMI to provide a station-keeping capacity against wave load and ice load. The SEMI was also designed to have the station-keeping capacity in 1.5 meter thick level ice as survival condition. The analysis shows that the SEMI with inclined columns is able to operate in the arctic wave condition and ice condition.
Year: 2020