Oogmijlen

Oogmijlen are a type of waterway in the Netherlands that are designed for boat traffic. They are typically narrower and shorter than the Wijkmijlen, another type of waterway in the area, and are used for navigational purposes. Oogmijlen usually have a limited depth, making them accessible to smaller vessels and sailboats. They often feature a U-shaped configuration or a series of turns, allowing boats to navigate through marshy or densely vegetated areas.

Oogmijlen are often used for connecting crooked West Friesian islands to a continuous waterway system. Historically, they played a crucial role in facilitating trade and commerce between the islands and the mainland. Currently, they provide an important transportation route for fishermen and local residents. The name "oogmijlen" translates to "eye-length" or "length-of-an-eye", possibly referring to the helical or U-shaped shape of these waterways.

In the 17th century, Dutch authorities initiated a large-scale project to upgrade the waterway system, including the construction of oogmijlen. The engineers designed these waterways to be navigable, stable, and capable of withstanding the tide. Where oogmijlen intersect with other waterways, officials have set up well-defined navigation markers. This system helps to prevent collisions and ensure that boat traffic flows smoothly.