Bydgoszcz Canal - a canal

Canal

Canals are man-made channels for water. There are two types of canal:#Waterways: navigable transportation canals used for carrying ships and boats shipping goods and conveying people, further subdivided into two kinds:...

, 24.7 km long, between the cities of Bydgoszcz and Nakło in Poland

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

, connecting Vistula

Vistula

The Vistula is the longest and the most important river in Poland, at 1,047 km in length. The watershed area of the Vistula is , of which lies within Poland ....

 river with Oder

Oder

The Oder is a river in Central Europe. It rises in the Czech Republic and flows through western Poland, later forming of the border between Poland and Germany, part of the Oder-Neisse line...

 river, through Brda

Brda River

The Brda is a river in northwestern Poland, a tributary of the Vistula. It is the country's 15th longest river, with a total length of 238 km and a catchment area of 4,627 km².-Navigation:...

 and Noteć

Notec

Noteć is a river in central Poland with a length of 388 km and a basin area of 17,330 km². It is a tributary of the Warta river and lies completely within Poland....

 rivers (the latter ending in the Warta river which itself ends in Oder). The level difference along the canal is regulated with usage of 6 locks

Lock (water transport)

A lock is a device for raising and lowering boats between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is...

. The canal was built in 1772-1775, at the order of Frederick II

Frederick II of Prussia

Frederick II was a King in Prussia and a King of Prussia from the Hohenzollern dynasty. In his role as a prince-elector of the Holy Roman Empire, he was also Elector of Brandenburg. He was in personal union the sovereign prince of the Principality of Neuchâtel...

, king of Prussia

Prussia

Prussia was a German kingdom and historic state originating out of the Duchy of Prussia and the Margraviate of Brandenburg. For centuries, the House of Hohenzollern ruled Prussia, successfully expanding its size by way of an unusually well-organized and effective army. Prussia shaped the history...

 (after annexation of western Poland by Kingdom of Prussia

Kingdom of Prussia

The Kingdom of Prussia was a German kingdom from 1701 to 1918. Until the defeat of Germany in World War I, it comprised almost two-thirds of the area of the German Empire...

 in First Partition of Poland

First Partition of Poland

The First Partition of Poland or First Partition of the Polish-Lithuanian Commonwealth took place in 1772 as the first of three partitions that ended the existence of the Polish-Lithuanian Commonwealth by 1795. Growth in the Russian Empire's power, threatening the Kingdom of Prussia and the...

).