a second class lever
A lever is a machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum.
wheel and axle
It's a 2nd order lever. Water is pivot, boat is load, arm is effort.An oar is a lever
oar
reegheh
A paddle boat is more suitable for leisurely activities on calm waters compared to an oar boat.
it's pronounced "park" as in a nature park then "oar" as in a boat's oar.
an oar or paddle
An Oar
oar
oar
A scull boat; one oar to the stern.