Venta Rapid Bypass Canal

Also known as the Duke Jacob Canal, Mārtiņsala Canal, or Venta Canal, the Venta Rapid Bypass Canal reflects the ambitions of its time. Duke Jacob attempted to make the Venta River navigable to accelerate trade development. Initially, the Duke ordered the Venta Rapids to be blown up, hiring a French engineer for the task. However, cracks appeared in the walls of the Duke’s castle after the first explosion, so the dangerous operation was halted.

Instead, it was decided to dig a bypass canal along the right bank of the river, but the dolomite layer proved difficult to excavate. Work resumed only a century later, but the project was never fully completed.

In the 19th century, the administration of Imperial Russia sought to implement a project connecting the Baltic Sea with the Vistula River basin, enabling goods transport by waterway from central Poland to the port of Ventspils. The plan included the construction of several canals, including the Venta Bypass Canal. However, the project was halted due to the 1831 Polish uprising against the Russian Empire, and later, the river connection was no longer economically viable.

The excavation of the canal led to the formation of Mārtiņsala.