Technical And Economic Evaluation Of Ultra-deep Water AHTS For South China Sea

Wide area of the South China Sea, rich in oil and gas resources, while most of them Concentrated at a depth of 300 meters over 1500 meters deep waters even more. Along with the Development strategy of China Offshore Oil to deepwater, more advanced AHTS vessel which can work in the deep water are needed. However, the number of AHTS owned by shipowner of China is very limited, especially in the. Ships market is far from saturated, thus the investment for this field has a good market and development prospects. This paper describes the development history, marine engineering support for offshore oil as well as gas resources in the development process of the boat. Besides, analyze the gap of high-power AHTS vessels in China South China Sea.The core part of the paper is the technical and economic evaluation of AHTS vessel Programs. According to parameters of the existing AHTS vessel whose host power is higher than 25000 horsepower, we formulate 12 alternatives on the basis of grid method. In order to judge the feasibility of the alternatives, I expanded technical inspection according to the empirical formula. Meanwhile, the paper select financial and operational index, such as NPV(Net present value), IRR(Internal Rate of Return), to judge whether the program has investment value. After the preliminary screening,8 feasible programs are picked out and sequenced. Then make comparison of the 8 alternatives depend on the single indicator. However, the result of the selection may be biased for the selection of ship programs is issue of Multi-objective decision, which variable index should be taken into account during the selection. Thus, scientific approach to decision making should be introduced. This article describes the feasibility of Factor analysis in the selection of ship programs. For the purpose of simplifying the calculation process, I use the SPSS to make comprehensive assessment for the 8 feasible alternatives picked out before. Then the best program can be selected. In terms of this paper, the following program is excellent. Deadweight:5700t, Speed:17.5kn. This result coincide with the previous approximately.The method of AHTS vessel programs selection proposed in the paper is effective, which can provide reference for the enterprises who committed to participating the ultra deep-water AHTS vessel market.