Djibouti offshore immigrants

Although the Caspian Sea has a word "sea" in its name, most countries in the world consider it an inland lake. The Caspian Sea is surrounded by land and has no access to the sea. Such an inland lake is called "sea" for two reasons. First of all, the Caspian Sea is large enough: as the largest inland lake in the world, it covers an area of 386,000 square kilometers (more than the land area of Japan). Such a big lake was endless in ancient times when the traffic was underdeveloped, so it was completely normal for people at that time to mistake it for the sea.

Just as the ancients in China once called Lake Baikal the North Sea. However, the reason why the Caspian Sea is called "sea" is not entirely because it is big. Historically, the Caspian Sea, like the Black Sea, was once a part of the ancient Mediterranean Sea, and only later did it become like this because of changes in geological movements. Although the Caspian Sea is completely surrounded by land geographically, its ecosystem is highly similar to the ocean, so many marine resources also exist in this inland lake. Today, there are five countries along the Caspian Sea: Russia, Azerbaijan, Kazakhstan, Turkmenistan and Iran.

The freight volume between these five countries along the Caspian Sea alone is very large. Cargo ships don't have to sail in the ocean, as long as the waters are large enough, lakes and rivers can sail. Obviously, an inland lake like Caspian Sea, which is larger than Japan's land area, is large enough to accommodate cargo ships. In fact, cargo ships can not only sail in the Caspian Sea, but also sail from the Caspian Sea to the real sea and from the real ocean to the inland lake of the Caspian Sea.

Although the Caspian Sea is surrounded by land, many rivers flow into it. Cargo ships sailing in the Caspian Sea can completely use these water systems to enter and leave the Caspian Sea. There are 130 rivers flowing into the Caspian Sea, such as Volga River, ural river River, Kula River and telek River. Such a dense water network provides convenient shipping conditions for the Caspian Sea region. There is a huge estuary delta in the northwest corner of the Caspian Sea, where the Volga River, Russia's mother river, the longest river in Europe flows into the Caspian Sea.

After the ship sailed into the Volga River from the Caspian Sea, it traveled more than 300 kilometers south to Volgograd. The name of this city in World War II was Stalingrad. There is a huge river center continent in the Volgograd River, and a river flows west on the south line of the river center continent. This is the Don River, which is famous for sholokhov's Silent Don River. It turns out that there is no water system between the Don River and the Volga River, so ships entering the Volga River from the Caspian Sea cannot sail into the Don River.

From 1948, the Soviet government spent huge manpower and material resources to build the Volga-Don Canal with a length of 100 km in three years. At this point, most ships sailing in the Caspian Sea can enter the wide Don River through this canal, and then cross the Don River to the west to reach the Azov Sea. Ships entering the Azov Sea can enter the Black Sea through the Kerch Strait between Crimea Peninsula and Krasnodar Territory of Russia. The dispute between Russia and Ukraine after 20 14 Crimea incident made the situation in the Azov Sea even more tense.

If we don't consider the situation of Azov Sea, it is feasible to enter the Black Sea from Caspian Sea simply in terms of physical geography. Ships entering the Black Sea can enter the Aegean Sea through the Bosporus Strait and the Da Daniil Strait. There are two routes for ships entering the Aegean Sea to move on: going south through the Suez Canal into the Red Sea, and then going out of the Djibouti Strait into the Gulf of Aden and the Indian Ocean; West across the Mediterranean, out of the Strait of Gibraltar, into the Atlantic Ocean. This shows that ships sailing in the Caspian Sea can enter the Atlantic Ocean and the Indian Ocean.

In fact, in 1930 1933, the Soviet government also built the White Sea-Baltic Canal connecting the White Sea and Lake Onega. The canal starts from Belomorsk in the north (meaning "the city of the white sea") and ends in Povinitz at the northern end of Lake Onega in the south. Together with the Volga-Baltic Canal and the Volga-Don Canal, this canal forms a water transportation network, which makes it possible to open navigation to the White Sea, the Baltic Sea, the Caspian Sea, the Azov Sea and the Black Sea. Ships in the Caspian Sea can not only enter the Azov Sea and the Black Sea through these canals, but also enter the White Sea and the Baltic Sea in the north.