Local expert dropped overboard? (5)
I believe the answer is:
pilot
'local' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for pilot that I've seen before include "Steer, test (scheme)" , "Aviator" , "Trial broadcast" , "Drive" , "One-off programme" .)