The boat chugged through the night, and before long the looming presence Austin had sensed earlier began to assume an outline.

A few small boats chugged up and down the narrowing stream.

The boat chugged out of the boathouse and into the dark harbor.

The surface of the lake had become quite dark; but as the boat chugged along, both men could notice the blackness of the trees.

The sea was calm as a small boat chugged out of the harbor a few days later.

The little boat was chugging through an inner channel.

The boat was chugging on, already twenty or thirty meters downstream and rapidly leaving them behind.

The boat chugged along smoothly, the net running six feet deep.

The boat chugged obediently toward the smear of land against the west horizon.

Our blue and yellow boat chugged along a narrow 10- to 20-foot-wide waterway.