What kinds of warships are there?

Ships are the main tools for water transportation and engineering operations, and there are many kinds.

According to the purpose, there are civilian ships and military ships; According to hull materials, there are wooden ships, steel ships, cement ships and FRP ships; According to the navigation area, there are ocean-going ships, near-ocean ships, coastal ships and inland river ships. According to power plants, there are steam ships, internal combustion engines, steam ships and nuclear-powered ships. According to the propulsion mode, there are open boats, propeller boats, horizontal propeller boats and sail-assisted boats. According to the navigation mode, there are self-propelled ships and non-self-propelled ships; According to the navigation state, there are drainage vessels and non-drainage vessels.

In the classification of civil ships, they are usually classified according to their uses. Due to different classification methods, the same ship can have different names. According to different purposes, it can be divided into: passenger ships and cargo ships; Ordinary cargo ship; Container ships, ro-ro ships and barge carriers; Bulk grain ship, coal ship and dual-purpose ship; Dual-purpose ship (ore/oil tanker, ore/bulk carrier/oil tanker) Special cargo ship (timber ship, refrigerated ship, automobile ship, etc. ); Oil tanker, liquefied gas tanker, liquid chemical tanker, timber tanker, refrigerated tanker, salvage ship, shipwreck rescue ship, icebreaker, cable laying ship, scientific research ship, fishing boat.