The person disembarking from the boat (7)
I believe the answer is:
lighter
'boat' is the definition.
(I know that lighter is a type of boat)
'the person disembarking from' is the wordplay.
I cannot really understand how this works, but
an anagram of 'the' is 'hte' which is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'the' is the link.
Can you help me to learn more?
(Other definitions for lighter that I've seen before include "- boot; - bun; - ware" , "Flat-bottomed boat" , "Barge; flame producer" , "Tender, launch" , "Less weighty" .)