A centerboard is lighter, therefore not as strong. The centerboard is retractable, the keel is not. Please see the related link below:
Sure...it all depends on the depth of the keel or centerboard (daggerboard). El Toros, for instance, have a relatively short centerboard and can easily sail in shallow water.
The purpose of a keel in a sailboat are to generate lift to counteract the force of the wind. The keel converts the motion of the wind into a forward motion for the sailboat.
The wind foils around the sail; this provides lift, and pulls it along. The water must pass from the front of the boat toward the rear, passing the centerboard (or keel) and then the rudder, to provide steerage.
the keel
Because It is not strong
if your in salt water barnicals could have grown in the swing keel slot and are holding it in place. Worse case senario, it has rusted and in doing so has begun to expand as it rusts and is lodged in place. Good luck
it floats by the forces of the wind and the keel it helps it to float!
If you remove the keel, be aware that centre of gravity and stability will be affected.
A main longitudinal structure along the bottom of the sailboat called the keel. This is what prevents it from tipping over.
Have up to much sail, surf waves, or break off the keel.
A Dagger Board is a small removable board that acts as a Keel on a small sailboat.