To direct into a specific course or pathway; to channel.
To multiplex (messages) through a single line.
To transmit through a channel.
To form a channel, especially by deepening or altering the course of a river.
To direct a ship; to superintend the steering of (a vessel); to watch the course of (a vessel) and direct the helmsman how to steer (especially through a channel, etc, rather than steer a compass direction).
The duty of directing a ship, usually used with the verb to have or to take and accompanied by the article "the."