The island was surrounded by deep water, making it a navigable and defensible strategic point.

This place marked the original northernmost navigable point of the Mississippi River.

It was the farthest navigable point on the Niger River, just above the rapids.

It is the first village on, and marks the most uppermost navigable point of, the River Shannon.

However, this right extends only to the "navigable point" of the water.

At that time, it was at the highest navigable point on the Tay.

Montreal had always been the last navigable point on the St. Lawrence River.

The piece of land had deep water, making it a navigable and defensible strategic point.

It was the northernmost navigable point of the European shore.

It is at the highest navigable point on the Kasai in the dry season.