海上交通是以航行安全和航行效率为目的的。
The purpose of maritime transportation is navigation security and navigation efficiency.
如果双桅帆船拥有比同等尺寸的单位帆船更大的帆，它在航行时会倾斜得更多，使得航行效率变低，也更容易翻船。
If a ketch had larger sails than an equivalent sloop, it would heel more (making sailing less efficient) and be more likely to capsize.
提高水和风的利用效率有助于抽水、碾磨或航行等工作。
Increased efficiency in the use of water and wind helped with such tasks as pumping, milling, or sailing.
这就需要使用一套标准化、规范化的管理手段，保障航行安全，提升船舶进出港效率。
This needs to use a set of standardized management method to safeguard the shipping security and to upgrade the efficiency of ships turnover the port.
其主要功能是改善海上交通环境，从而保障船舶航行的安全、提高航运效率、保护海洋环境。
The main function of I-VTS is to improve ocean traffic circumstance so as to guarantee the safety of vessel navigation, increase shipping efficiency and protect the ocean environment.
这一合作创造了世界上独一无二的新船体形态，既有全排机动游艇在低速航行时的高效率，又有半排船只能够达到的最高速度。
The product of this collaboration is a unique hull form that combines the low-speed efficiency of a full displacement motoryacht with the maximum speed associated with a semi-displacement vessel.
这一合作创造了世界上独一无二的新船体形态，既有全排机动游艇在低速航行时的高效率，又有半排船只能够达到的最高速度。
The product of this collaboration is a unique hull form that combines the low-speed efficiency of a full displacement motoryacht with the maximum speed associated with a semi-displacement vessel.
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