عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Nowadays, the majority of Communication and world trade is carried through sea and the country which is the more dominant in the sea is more powerful. Dominance over the sea can be achieved through the vessels such as ships and submarines that are dividing in two main groups commercial and military ships. There are many similarities and differences between kinds of ships, so expressed various Definitions and divisions from kinds of ships. Till now, many definitions of a ship have been provided and many similarities and differences of various types of the ships have been mentioned as well. In this paper we considered the military and commercial applications of ships and reviewed the definitions of warships that have provided by the Conventions on the Law of the Sea and the laws of some countries .We also considered the physical appearance, how to name and identify these ships, the reasons for their dependence on governments, and the importance of separate warships from non-military ships in international law viewpoint. In addition we mentioned the reasons for more restrictions of warships than merchant ships.