Channels (some famous examples)
Panama Canal/Channel
   
   The Panama Canal is a major ship canal that traverses the Isthmus of Panama
   in Central America, connecting the Atlantic and Pacific
   Oceans. Construction of the canal was one of the largest and most difficult
   engineering projects ever undertaken. It has had an enormous impact on
   shipping between the Pacific and Atlantic oceans, obviating the long and
   treacherous route via the Drake Passage and Cape Horn at the southernmost
   tip of South America. A ship sailing from New York to San Francisco via the
   canal travels 9,500 kilometres, well under half the distance of
   the previous 22,500 kilometre route around Cape Horn.
   See wikipedia.
Suez Canal/Channel
   
   Suez Canal, artificial waterway running north to south across the Isthmus
   of Suez in northeastern Egypt; it connects the Mediterranean Sea with the
   Gulf of Suez, an arm of the Red Sea. The canal provides a shortcut for
   ships operating between both European and American ports and ports located
   in southern Asia, eastern Africa, and Oceania. 
   
   See msn encharta.
   
   
Kiel Canal (Nord-Ostsee-Kanal)
   
   The Kiel Canal is the most frequently used man-made waterway in the
   world. It connects the North Sea with the East Sea and spares ships the
   longer way around the Skagerrak at the northern top of Danemark. The canal
   has a length of 99 kilometers and crosses Schleswig-Holstein (Germany)
   from the mouth of the Elbe (river) at the North Sea to the firth of Kiel
   (Kieler Förde) at the East Sea. It was built in the years 1887-1895 and has
   been opened in the year 1895.
   
   
   
   
   
Grand Canal of China
   
   The Grand Canal of China is the longest canal (about 2000 km) in the world. It passes
   through Beijing, Tianjin, Hebei, Shandong, Jiangsu and Zhejiang. The oldest
   parts of the canal date back to the 5th century BC. In former times the
   Grand Canal served as the main artery between northern and southern China
   and was essential used for the transport of grain to Beijing. 
   
   
 
 
