Urinals at sea are somewhat narrow, perhaps (7)
I believe the answer is:
insular
'somewhat narrow perhaps' is the definition.
I can't tell whether this definition defines the answer.
'urinals at sea' is the wordplay.
'at sea' indicates an anagram.
'urinals' is an anagram of 'INSULAR'.
'are' acts as a link.
Can you help me to learn more?
(Other definitions for insular that I've seen before include "Isolated -- urinals (anag)" , "Man, for one, is so" , "Detached from mainstream" , "Narrowly restricted in outlook or scope" , "Detached - urinals (anag)" .)