Snag-boats are used to remove obstacles from rivers.

The tea boats sailed gracefully on the river.

Deck boats are popular for recreational activities on the water.

The monkey boats sailed gracefully across the river.

There were many steam-boats on the river.

I saw several belly boats on the lake.

There are many kick boats available for rent at the lake.

There are many hong boats in the harbor.

The picket boats patrolled the harbor to ensure security.

Jet boats are popular for recreational activities on the river.