She finished third in the 10K event but was disqualified for missing a channel marker.

If we lost sight of these channel markers, we're finished.

He cruises around at night to make sure the channel markers and other devices are all in working order.

The pilot pointed to a channel marker thirty yards ahead.

Reluctantly he made for a channel marker and held on to its bell cage.

That's why you have to know which side of the channel marker to follow.

They were passing the channel markers to the right and left and heading for the open sea.

The French also moved the channel markers to confuse the British approach.

He restarted the engine and they followed a trail of channel markers south through the bay.

By the time we reached the channel markers, the waves had gotten choppy.