Crew on board goes quickly (6)
I believe the answer is:
steams
'goes quickly' is the definition.
(steam can mean to move quickly)
'crew on board' is the wordplay.
I cannot quite understand how this works, but
'crew' could be 'team' (both can mean a group of colleagues) and 'team' is present in the answer.
'on board' could be 'ss' (I've seen this in other clues) and 'ss' is found within the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for steams that I've seen before include "Cooks with water vapour" , "Emits vapours" , "Cooks using evaporated water" , "Rises as vapour" .)