Maintenance of harbor channels and navigation aids began early.

He was in the harbor channel for the commercial ships using the port of Tampa.

Filled with the cruel urge, more than hunger, of the fox in the hen-roost, he swept down the harbor channel, with his school behind him.

The main harbor channel is small enough to restrict the size of vessels that could attempt to use it.

The two lighthouses mark the harbor channel at the mouth of the Connecticut River.

Only relatively small craft are capable of passing the harbor channel.

This building sits less than five hundred yards from the harbor channel.

They waved back and let down one side; the leviathan swam out of the pen and into the harbor channel that led to the sea.

The Misa River, used as an harbor channel, had to have new concrete embankments and lost its scenic attractiveness.

Frost constantly checked that their position was still secure, while Pegg kept an eye on the end of the harbor channel.