Those in charge lifting six deliveries from the boat and into the water (9)
I believe the answer is:
overboard
'from the boat and into the water' is the definition.
'those in charge lifting six deliveries' is the wordplay.
'those in charge' becomes 'board'.
'lifting' is a charade indicator (letters next to each other).
'six deliveries' becomes 'over' (cricket term).
'board' put after 'over' is 'OVERBOARD'.
(Other definitions for overboard that I've seen before include "Film" , "heading for the water" , "Man ??? - he's fallen off the ship" , "in need of a life jacket" , "(Fall) into the sea" .)