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Title: Scheduling transshipment operations in maritime chemical transportation
Keywords: transshipment, scheduling, chemical logistics, shipping, maritime transport, tanker lightering
Issue Date: 9-Apr-2006
Citation: HUANG CHENG (2006-04-09). Scheduling transshipment operations in maritime chemical transportation. ScholarBank@NUS Repository.
Abstract: Transshipment or direct ship-to-ship transfer of bulk liquid cargos for regional distribution is a common activity in maritime chemical logistics. Efficient scheduling of transshipment operations is economically crucial because of the high costs of the participant multi-parcel carriers. In this research, we first consider a general chemical transshipment problem, in which multiple donor carriers transship several chemical cargos to multiple recipient carriers. We develop nine continuous-time mixed-integer linear programming (MILP) formulations of three types for determining the optimal sequences, positions, and timings for unloading various cargos. In addition, we consider a special case of transshipment operation, tanker lightering. We develop two alternate MILP formulations addressing two objectives, one considers time-charter cost of tankers, and the other considers demurrage cost of tankers. Our research also suggests that the slot-based sequencing approach is generally more efficient than the pair-wise and event-based sequencing approaches in many scheduling problems.
Appears in Collections:Master's Theses (Open)

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