Take eleven pieces of timber from the hull (4)
I believe the answer is:
keel
'timber from the hull' is the definition.
'keel' can be an answer for 'hull' (thesaurus). I am not sure about the 'timber from the' bit.
'take eleven pieces' is the wordplay.
'pieces' indicates a hidden word (I've seen 'piece of' mean this).
'KEEL' is hidden within 'take eleven'.
'of' is the link.
Can you help me to learn more?
(Other definitions for keel that I've seen before include "ridge" , "Low part of ship" , "Long part on a boat's bottom" , "Ship's basic longitudinal structure" , "Part of ship's hull" .)