建立航线经济模型,论证了除船舶自身成本（包括船舶资本成本、营运成本、燃料成本等）外,港口间运量不确定性也会引起船舶规模经济.结果表明:在港口运量匀质化假设下,一条航线的船舶挂靠的港口越多,货源不足的风险就越分散,航线收益率就越高;当港口运量非匀质化时,港口运量差异较大，小港口货源较稳定或大港口货源较不稳定,三者将会对船舶规模经济起反作用.
Abstract
Shipping line economic model was established to prove that other than the ship costs itself (including ship capital costs, operating costs, fuel costs, etc), the uncertainty of traffic volume between ports can cause the economies of scale in respect of ship size as well. Results show that under the homogeneity assumption among traffic volume between ports, the more ports of one shipping line are called, the risk of freight traffic source insufficiency will be more scattered, and the profit rate of shipping line will be higher. When the traffic volume between ports is inhomogeneity, the enormous differences in traffic volumes between ports, the steady freight traffic source of small ports, or the more fluctuating freight traffic source of large ports, and these three factors will counteract the ship economies of scale.
关键词
集装箱船 /
规模经济 /
运量不确定性 /
船舶大型化
Key words
container ship /
economies of scale /
uncertainty of traffic volume /
ship enlargement
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参考文献
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