Capital for a ship holding company (6)
I believe the answer is:
assets
'capital' is the definition.
(financial assets)
'a ship holding company' is the wordplay.
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
'holding' indicates putting letters inside.
'company' becomes 'set' (I've seen this in other clues).
'ss' placed around 'set' is 'ssets'.
'a'+'ssets'='ASSETS'
'for' is the link.
(Other definitions for assets that I've seen before include "Company's property" , "One's valuables" , "Useful or valuable possessions or qualities" , "Total value of possessions" , "One's total goods" .)