Skeg
I think it's called a skeg.......does that help?
No, the keel bone is not found in a bird's thigh. The keel, or carina, is an extension of the breastbone (sternum) that protrudes downward and provides an anchor point for the flight muscles. It is located on the chest of the bird, not in the thigh region. The thigh bones in birds are part of the leg structure, separate from the keel.
Also called a box keel it in the form of a box to allow pipes and other services throughout the keel length
A keel
keel
keel
The keel .
keel
the keel
A keel
it is called keel
The very bottom of a ship is where you find the keel. The keel runs the full length of the ship along its centerline and is the backbone of the hull. From the keel all the frames run out and up. the hull is attached to the frames. Picture the keel as the backbone and the frames as the ribs. The hull is the watertight skin that allows the ship to float. Within the hull are compartments (rooms) and at the top of the hull is the main deck. The superstructure is built upon the main deck.