Ships made fast (5)
I believe the answer is:
fleet
I believe this clue is a double definition.
'ships' is the first definition.
(eg a naval fleet)
'fast' is the second definition.
(similar in meaning)
'made' acts as a link.
(Other definitions for fleet that I've seen before include "Fast kind of armada?" , "task force" , "Navy - quick" , "Rapid in movement" , "Naval force or collection of buses" .)