Canals and navigations are human-made channels for water. In the vernacular both are referred to as 'canals'. The main difference between them is that a navigation parallels a river and shares its drainage basin, while a canal cuts across a drainage divide.
Types of artificial waterways
A navigation is a series of channels that run roughly parallel to the valley and stream bed of an unimproved river. A navigation always shares the drainage basin of the river. A vessel uses the calm parts of the river itself as well as improvements, traversing the same changes in height.
Most commercially important canals of the first half of the 19th-century were a little of each, using rivers in long stretches, and divide crossing canals in others. This is true for many canals still in use.
Structures used in artificial waterways
Both navigations and canals use engineered structures to improve navigation:
Although the Austrian, German and Russian administrations exerted much pressure on the Polish nation (during the 19th and early 20th centuries) following the Partitions of Poland, which resulted in attempts to suppress the Polish language, a rich literature has regardless developed over the centuries and the language currently has the largest number of speakers of the West Slavic group. It is also the second most widely spoken Slavic language, after Russian and just ahead of Ukrainian, which comes third.
"Games" is the fourth episode of the first season of seaQuest DSV. It originally aired on October 3, 1993.
The seaQuest evacuates an icy prison whose population consists of a warden and his lone prisoner, the biochemist and war criminal Dr. Rubin Zellar. Zellar is (supposedly) being kept cryogenically frozen during transport, while the warden is shown around the ship and begins to get along with Dr. Westphalen.
Crew members soon discover that the body in the stasis chamber is the warden, who was killed by Dr. Zellar. Zellar is captured easily, but escapes and holds the crew hostage with a biological agent he smuggled aboard. He threatens to release the agent unless Captain Bridger and Commander Ford destroy the UEO headquarters at Pearl Harbor.
Meanwhile, Lucas Wolenczak has been trying to access the UEO's files on Zellar, at the request of Bridger. He discovers that Dr. Westphalen's brother was among the many people murdered by Zellar. Bridger and Ford fire the missiles, but since they had removed the warheads earlier, no damage was done. Before they can arrest Zellar, Westphalen walks in, pointing a weapon at Zellar. After exchanging a few words with Zellar she pulls out a vial filled with a liquid and tells him that he deserves to die in the same way that he killed. She throws it on him, but it turns out the liquid was non-toxic.