Multiple Products Clause Samples

Multiple Products. ▇▇▇▇▇▇▇▇▇▇▇▇ et al. [8], argues that some shipments require multiple nonmixable products to be carried onboard simultaneously, in which the charterer is responsible of splitting the tonnage into defensible piles or tanks (dependent on the vessel). Usually, this problem is solved by separating the vessels carrying space into fixed tanks. However, several vessels operate by dynamic holds or load the cargo into piles. The sizes of the piles are dependent on the requested orders, and therefore not considered as fixed, a mathematical description of this problem is presented in ▇▇▇▇▇▇▇▇▇▇▇▇ et al. [8]. In order to allow nonmixable products onboard simultaneously, the authors added even more constraints. This formulation assumes that the arrival node is both a loading and an unloading port. The added constraints describe the number of occupied tanks, in addition to the intervals of the number of occupied tanks after servicing the loading and unloading nodes. Further, all vessels are restricted by a constraint that imposes the initial tank occupancy condition for each of them. Moreover, in respect to the planning horizon, the numbers of occupied tanks are assumed to be zero when the vessels are first available for scheduling. In the specific literature, these problems are mostly attached to the gas and oil industry. Among others, ▇▇▇▇▇ [49] and ▇▇▇▇▇ et al. [2], considered multiple products in a maritime transport setting. ▇▇▇▇▇ [49], considered a problem that involved shipping of multiple products from a refinery to several depots. All shipments were carried out by heterogeneous vessels with fixed tankers. Baush et al. [2], presented a DSS that optimizes the fleet of coastal tankers and barges transported liquid bulk products among sites, distribution centers and industrial customers. The figure 3.2 is a picture of “M/V Faktor” during unloading, and illustrates how the vessel is capable of carrying multiple products onboard simultaneously. The different products are separated into piles, which provide the opportunities of executing more than one order per shipment. Nonmixable cargos will, because of the shapes of the piles, take care of the limitations of carrying multiple products on a shipment.