Police watercraft are boats or other vessels that are used by police agencies to patrol bodies of water.
They are usually employed on major rivers,[1] in enclosed harbors near cities or in places where a stronger presence than that offered by the harbormaster or coast guard is needed.
Police boats sometimes have high-performance engines in order to catch up with fleeing fugitives on the water.
They have been used since the beginning of the 20th century.
[2] Media related to Police watercraft at Wikimedia Commons