A power driven vessel is often understood to be a mechanically driven boat. Human power as in rowing or wind driven power is not usually considered power driven.
lights must be on during periods of restriced visibility
A collective noun for ocean going vessels is a fleet of vessels. A collective noun for drinking vessels is a set of vessels. A collective noun for liquid carrying (in plants and animals) vessels is a system of vessels.
Vessels
twisted vessels
Nicotine is the blood vessels' constrictor. Not all blood vessels, of course, but mainly the peripheral blood vessels, including the brain capillary blood vessels.
they are blood vessels
the vessels to the body are arteries
Capillaries are known as exchange vessels. Capillaries are the smallest of vessels and allow nutrients and waste to pass through blood and body.
Vessels
blood vessels. doppus
leaf vessels
Blood Vessels-are the passageway of blood.