Calculation of Load on Jacket Leg during Float-over Installation of Dual Topsides using Single Vessel

단일 설치선을 사용한 2기 해양플랜트 Topside Float Over 설치 시 Jacket Leg의 하중 계산

Bae, Dong-Yeol;Lee, Seung-Jae;Lee, Jaeyong

  • Received : 2014.11.28
  • Accepted : 2015.02.27
  • Published : 2015.04.30


The float over method is the most preferred method for installing heavy topside onto a jacket platform. A very complex platform with multiple jacket structures on a specific field requires multiple installation procedures. This study validated the installation of two topsides using a single installation barge to reduce the operation and installation cost. The hydrodynamic properties of the installation barge during the installation of two topsides were calculated. The tension and fender forces during docking were investigated to show the validity of the proposed dual topside installation method. In conclusion, the operational safety of the proposed procedure was validated through the calculation of the motion of the installation vessel and loads on the jacket legs.


Multiple topside;Installation;Mating;Docking;Motion RAOs;Fender forces;Mooring tensions


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Supported by : 한국연구재단