Mariners' home (7)
I believe the answer is:
seattle
'mariners' home' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for seattle that I've seen before include "city in north-west America" , "Largest city in the state of Washington" , "major US port" , "US West coast port" , "? American seaport" .)