An Industrial Ocean‐Cargo Shipping Problem
研究了一个工业海运散货问题，涉及从海外港口经转运港到客户的运输决策，包括租船数量、转运港选择和陆运安排，通过建模和求解混合整数规划得到可实施的方案。
This paper reports the modeling and solution of an industrial ocean‐cargo shipping problem. The problem involves the delivery of bulk products from an overseas port to transshipment ports on the Atlantic Coast, and then over land to customers. The decisions made include the number and the size of ships to charter in each time period during the planning horizon, the number and location of transshipment ports to use, and transportation from ports to customers. The complexity of this problem is compounded by the cost structure, which includes fixed charges in both ship charters and port operations. Such a large scale, dynamic, and stochastic problem is reduced to a solvable stationary, deterministic, and cyclical model. The process of modeling the problem and the solution of the resultant mixed integer program are described in detail. Recommendations from this study have been implemented.