世界散货船船队扩大据德国航运经济与物流研究所（ＩＳＬ）称，世界散货船船队已连续四年扩大，而石油散货矿砂运输船（ＯＢＯ）船队却一直持续减少。１９９３～１９９７年间，世界散货船船队按载重量平均每年增加５％。相反，ＯＢＯ吨位于１９９７年初保持在２１４０... According to the German Institute of Shipping Economics and Logistics (ISL), the world's bulk carrier fleet has expanded for four consecutive years while the OBO fleet has been steadily declining . Between 1993 and 1997, the world bulk carrier fleet increased by 5% annually on average. In contrast, OBO tonnage remained at 2140 at the beginning of 1997