What is technically correct and what term is generally used and understood are not always the same. The big piece of steel that swings down on my boat weighs about 140 pounds and almost anywhere you find a listing for my boat or similar ones they will be referred to as a "swing keel".
Chuckles is right about needing more specific info, though. I have a planing hull with a shallow V, so I cannot point nearly as well without it if I am heeling.
Newport 17 - "Kohanna"
At sea Darwin's hypotheses is the final arbiter of right of way.