Tip in gale at sea requires loading of program (9)
I believe the answer is:
lagniappe
'tip' is the definition.
(US term for a tip or bonus payment)
'in gale at sea requires loading of program' is the wordplay.
'at sea' is an anagram indicator.
'requires loading of' is an insertion indicator.
'program' becomes 'app' (type of computer program).
'in'+'gale'='ingale'
'ingale' is an anagram of 'lagnie'.
'lagnie' enclosing 'app' is 'LAGNIAPPE'.
(Other definitions for lagniappe that I've seen before include "small donation" , "Gratuity" , "tip" , "present" .)