That presence is essential to protect American interests and free navigation.

Some boats with provisions had succeeded in slipping by all these obstacles, but the free navigation of the river was essential to the British.

The Court also reaffirmed that the Compact of 1802 gave both states free navigation of the river.

Iran's mullahs seem now to perceive that free navigation for all in the gulf, not mine-laying, serves their best interests.

Nasser did not dispute the principle of free navigation through the Canal, only the details of its operation.

A 40 feet clearance is kept from the normal high flood level to ensure free navigation under the bridge, sources added.

Both could claim land and both were guaranteed free navigation throughout.

The concern of the great powers was the free navigation through the strait.

Following a period when the Archbishops of York charged tolls for its use, it became a free navigation.

We defend the right of free navigation.