Ill-fated ship (7)
I believe the answer is:
titanic
'ill-fated ship' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for titanic that I've seen before include "Huge, epic" , "Great ocean liner sunk by iceberg" , "Huge - disaster struck this ship" , "Colossal, liner" , "Doomed liner found in attic" .)