Because of the special character of the object, there are great differences between the mortgage of under-construction ship and the mortgage of ship.
由于标的物本身的特殊性，建造中船舶抵押权与一般船舶抵押权有很大的不同。
2
Next, the character of the knowledge in ship navigation performance design is analysed, the knowledge expression method and saving way in expert system and database are discussed too.
跟着分析了船舶航行性能设计知识的特点，讨论了知识在专家系统和数据库中的表达方法和存储方式；
3
Its bodies in the sub water are apt to contact with the obstacles of the seabed because of its special character of sea gauge, consequently, causes ship grounding.