Keel: (1) A longitudinal centre member running the length of a hull or float. (2) An internal or external framework integral with the underside of a rigid airship and serving to distribute the concentrated loads along the hull.
The keel effect occurs with high wing aircraft. These are laterally stable simply
because the wings are attached in a high position on the fuselage, making the
fuselage behave like a keel.
-This depends upon the keel surface or total side area of an airplane. The keel surface includes all the struts, wires, wheels, wings, as well as body, against which a side wind can blow.
317, shows the triangular keel member with the cat-walk by which the crew can travel from one end of the ship to the other and gain access to the different gas bags.
Touchdown should be made with the keel of the floats or hull as nearly parallel to the surface as possible. After touchdown, full back elevator most be applied and additional power applied to lessen the rapid deceleration and nose-over tendency.
In such designs, the high mounted wing is above the center of gravity which confers extra Dihedral Effect due to the pendulum effect also called the Keel effect, so additional Dihedral Angle is not required.
The empennage is the tail assembly of an aircraft, consisting of large fins that extend both vertically and horizontally from the rear of the fuselage. Their primary purpose is to help stabilize the aircraft, much like the keel of a boat.
Their primary purpose is to help stabilize the aircraft, much like the keel of a boat or fletching of an arrow. In addition, they also have control surfaces built into them to help the pilots steer the aircraft.
The best I could do was say that our neighbor, who had a ship tattooed on his chest when he was a young sailor, looked cool. Unfortunately, after decades of consuming cheeseburgers, the ship's keel looked a lot longer that it once did.
The reason it doesn't tilt any more than it does is because it has tons of lead in the keel. You can't bank it by shifting your weight, and it wouldn't turn much if you did. You steer it with the rudder.
 See also: Lift, Aircraft, Direct, Flight, Pilot
  
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