Maybe princess's group of deputies on ship strip? (10)
I believe the answer is:
dispossess
'strip?' is the definition.
(I know that dispossess is a type of deprive)
'maybe princess's group of deputies on ship' is the wordplay.
'maybe princess's' becomes 'Di's' (Princess Diana).
'group of deputies' becomes 'posse' (term for a group of US police deputies).
'on' means one lot of letters go next to another.
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
'dis'+'posse'+'ss'='DISPOSSESS'
(Other definitions for dispossess that I've seen before include "Drive out l" , "Expel" , "Deprive of land and property" , "Deprive (someone) of land/property" .)