Abstract: In response to the rapid development of offshore wind power equipment construction， relying on the existing suction bucket jacket construction project， this paper compares and analyzes the characteristics and performance of existing jacket hoisting technology， and innovatively designs a jacket end-up system according to project requirements， which is used for the vertical work of a 1400t jacket. The article analyzes and compares the advantages and disadvantages of the flipping system with traditional cranes， and uses finite element software to analyze the overall strength and stability of the end-up system. This system has been successfully applied in practical engineering， successfully end-up 50 sets of suction bucket jacket， proving the reliability and safety of the system， and providing the latest technical reference for the construction and installation of offshore wind power suction bucket jacket.

Key words: offshore wind power, suction bucket jacket, end-up system