There jacket - large system models can be using software system, which have currently on the world and in Vietnam to calculating: StruCAD*3D: StabCAD: NEPTUNE. Developed by Zentech USA: MOSES (Multi Operational Structural Engineering Simulation) and SACS (Structural Analysis Computer System). Program Manual-Engineering Dynamic, Inc. USA. but their use often by foreigners. The most important prohlem is the system simulation includes barge and jacket. This paper presents method numerically simulate the barge - jacket system for calculating the jacket launch process using a barge by finite elements software, desire to affirm the ability of the engineers in the calculation the problems mentioned above.