It kept drifting right and left in the navigable channel.

However, this is not a navigable channel but rather an uneven bottom.

"Go ahead" (the green light is always placed at the side of the navigable channel).

This bridge is the official end of the navigable channel for river traffic.

Keep out of narrow navigable channels, shipping and other high traffic areas.

The inner lagoon has a navigable channel to the ocean.

Dredging programs were necessary to maintain a navigable channel to the sea.

During the night, Mexican forces placed obstructions in the only navigable channel.

The river delta is highly braided with three main navigable channels.

The appearance of new navigable channels also requires much tighter security and environmental standards to be established.

Vessels may steer towards the yellow light, which is placed above the navigable channel.

Two navigable channels cut across the northern and southern ends of the barrier reef.

Thirteen broads are generally open to navigation, with a further three having navigable channels.

He hoped to find a navigable channel through the reef to the open ocean, and was finally able to do so after numerous attempts.

As a result, he said, the navigable channel into Highlands is about 100 yards wide but has steep shoals on each side.

The mouth of the bay is only sixty miles wide, and the navigable channel is much tighter.

There are very few places where a barge can tie up, and it must follow navigable channels.'

Dredging is usually undertaken to maintain navigable channels in lakes and rivers.

Modern ships need navigable channels with 45-foot depths.

Only two narrow navigable channels remained, and the strongest forts guarded them.

The marks indicate the position of the navigable channel in relation to the banks and, where appropriate, its crossover from one bank to the other.

The middle of the main navigable channel of a waterway that serves as a boundary line between states.

The bar is fed by river silt, but its most navigable channel has been dredged to a depth of 55 feet.

The big fish was forced to swim in the deeper middle of the creek, a narrow navigable channel, a tighter trap.

The actual navigable channel of the Mississippi passes beneath the main channel bridge.