Craft's heading south, traversing fresh half-moon (8)
I believe the answer is:
crescent
'half-moon' is the definition.
(thesaurus)
'craft's heading south traversing fresh' is the wordplay.
I cannot quite see how this works, but
'south' could be 's' (synonyms) and 's' is located in the answer.
'fresh' could be 'recent' (I've seen this before) and 'recent' is located in the leftover letters.
A single letter 'c' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for crescent that I've seen before include "Curved shape of the moon in first quarter" , "Growing" , "Curved aspect of the moon" , "Semi-circular shape" , "Moon shape; curved street" .)