Why were logs pointed on ends around a fort
a small and light boat with pointed ends
these keep the lite out of a room.
The ends of nails always made pointed because it help the nail to enter an object easy and faster.
A boat has a pointed bow to reduce the resistance of the water as the boat moves forward.
In that the Stern is a noun referring to the back end of the boat, there's no way around it: longitudinal objects including boats all have two ends and, if they move in a predictable manner, one end is bound to front front (bow) and the other back (stern).
Claws
How about "the briny?"
In order to slice through the water with ease.
a pole is used on symmetrical boats, or a boat that has the spinnaker, or kite, out in front of it. An A-Symmetrical boat puts the spinnaker to the side. A-Symmetrical boats use a bowsprit to hold the sail out in front of the boat, but Symmetricals use a pole. it clips onto the mast of the boat, and the other ends holds the sail.
Dragon Heads.
long and pointed ends