A raft travelling south carrying pieces from shore? (9)
I believe the answer is:
thousands
'a raft' is the definition.
(a raft can mean a large number or amount)
'travelling south carrying pieces from shore?' is the wordplay.
'travelling' indicates anagramming the letters.
'carrying' means one lot of letters goes inside another.
'pieces from shore?' becomes 'sand' (sand from a beach).
'south' with letters rearranged gives 'thous'.
'thous' enclosing 'sand' is 'THOUSANDS'.
(Other definitions for thousands that I've seen before include "Large numbers" , "1000s" , "Crowds" , "Dan shouts out at many hundreds" , "a lot" .)