severe, rigid, bitter, rough
At the rear of the boat. In the rear.
Another word for very strict or harsh is stern.
Rear
Stern
stern
It's the rear-most part of the boat.
A lever is a machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum.
At the rear
stern
the stern
The end or back or rear of a boat is called the stern.