Agitated international seaman recalling difficulty (7)
I believe the answer is:
amnesia
'recalling difficulty' is the definition.
I can't tell whether this definition defines the answer.
'agitated international seaman' is the wordplay.
'agitated' is an anagram indicator.
'international' becomes 'i' (abbreviation eg in IMF).
'i'+'seaman'='iseaman'
'iseaman' is an anagram of 'AMNESIA'.
Can you help me to learn more?
(Other definitions for amnesia that I've seen before include "Mental condition" , "Severe forgetfulness" , "illness" , "Medical condition" , "Main sea (anag.)" .)