The conclusion of this paper is as following : 1 . the time of warrantee description of vessel is the time when the charter is concluded . the factors of the charterer ' s employment of vessel and bunker quality should be taken into account in charterer ' s speed claim 通过对nype46和nype93格式中上述五个条款的比较研究，可以得出以下结论： 1 、保证船舶详述准确性的时间是订立租约的当时，船速索赔应该和承租人对船舶的使用、燃油质量等因素综合起来考虑(第一章) 。
