Glimpse of Merchant Ship History And Types

Glimpse of Merchant Ship History And Types

A passenger ship is a merchant ship whose main function is to carry passengers at sea. This category does not include cargo ships with room for a limited number of passengers, such as the once popular twelve-passenger cargo ships at sea where passenger transport was secondary to the freight car. Now, ocean liners and the cargo capacity of most cruise ships have been eliminated. Cruise ships are large passenger ships that offer pleasure seekers and adventure travelers. Bulk carriers afford an easy and low-priced way to transport bull cargo over long distances around the sea port of the world. The concept of a bulk ship dates back to the 1850s to transport important food grains, ores and minerals. They have helped us to growth of present vast civilization. From the available statistics, more than half of all bulk carriers have registered in Greek, Japanese, or Chinese owners. Container ships are now the largest and successful commercial seaborne vessels and the competitor of crude oil tanker or giant bulk carrier. About 90% of non bulk cargo worldwide is transported by container ships. Today the largest modern container ships (as example OOCL Hong Kong) can carry 21413 TEU or twenty foot equivalent units. Liquefied Natural Gas (LNG) mostly consists of methane but it has little amount of other hydro-carbon. Liquefied Petroleum Gas (LPG) is heavier than LNG and mainly consists of butane and propane. The materials used in the inner design of LNG tankers can withstand low temperatures and for LNG tankers can withstand either high pressure or low temperatures. Tanker provides an easy and inexpensive way to transport oil over long distances. They have helped us progress as a civilization; but they also have presented us with considerable problem as well (oil pollution at sea). It would be impossible to enjoy the mobility many of us take for granted without oil tanker.