Abstract: A preliminary selection of the lifeboat type was made based on design specifications， the environmental conditions of the Liuhua oil and gas field project and the specific parameters of the cylindrical floating production storage offloading（FPSO) and lifeboat device were introduced. The motion of the lifeboat during the release process was analyzed， and based on the application of lifeboats on SEVAN cylindrical FPSO， it was demonstrated that the application of free-fall lifeboats on Liuhua's cylindrical FPSO is feasible.

Key words: free-fall lifeboat, cylindrical FPSO, regulatory requirements, state of motion, feasibility study